diff --git a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/index_constraint/__init__.py b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/index_constraint/__init__.py
index 17cc10fdf..f9feb1eeb 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/index_constraint/__init__.py
+++ b/web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/index_constraint/__init__.py
@@ -196,6 +196,7 @@ class IndexConstraintView(PGChildNodeView):
       - This function will generate dependent list to show it in dependent
         pane for the selected Index constraint.
     """
+    icon_sign = "icon-%s"
 
     node_type = 'index_constraint'
 
@@ -232,7 +233,6 @@ class IndexConstraintView(PGChildNodeView):
         database connection before running view, it will also attaches
         manager,conn & template_path properties to self
         """
-
         @wraps(f)
         def wrap(*args, **kwargs):
             # Here args[0] will hold self & kwargs will hold gid,sid,did
@@ -245,8 +245,8 @@ class IndexConstraintView(PGChildNodeView):
                 self.manager.db_info[kwargs['did']]['datlastsysoid'] \
                 if self.manager.db_info is not None and \
                 kwargs['did'] in self.manager.db_info else 0
-            self.template_path = 'index_constraint/sql/#{0}#'\
-                .format(self.manager.version)
+            self.template_path = 'index_constraint/sql/#{0}#'.\
+                format(self.manager.version)
 
             # We need parent's name eg table name and schema name
             schema, table = idxcons_utils.get_parent(self.conn, kwargs['tid'])
@@ -263,6 +263,12 @@ class IndexConstraintView(PGChildNodeView):
         # End transaction if any.
         self.conn.execute_scalar(SQL)
 
+    def get_error_msg(self):
+        return _("""Could not find the {} in the table.""").format(
+            _("primary key") if self.constraint_type == "p"
+            else _("unique key")
+        )
+
     @check_precondition
     def properties(self, gid, sid, did, scid, tid, cid=None):
         """
@@ -287,10 +293,7 @@ class IndexConstraintView(PGChildNodeView):
             return res
 
         if len(res) == 0:
-            return gone(_("""Could not find the {} in the table.""").format(
-                _("primary key") if self.constraint_type == "p"
-                else _("unique key")
-            ))
+            return gone(self.get_error_msg())
 
         result = res
         if cid:
@@ -329,6 +332,7 @@ class IndexConstraintView(PGChildNodeView):
         except Exception as e:
             return internal_server_error(errormsg=str(e))
 
+    @check_precondition
     def get_node_list(self, gid, sid, did, scid, tid, cid=None):
         """
         This function returns all primary keys
@@ -345,11 +349,6 @@ class IndexConstraintView(PGChildNodeView):
         Returns:
 
         """
-        self.manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(sid)
-        self.conn = self.manager.connection(did=did)
-        self.template_path = 'index_constraint/sql/#{0}#'\
-            .format(self.manager.version)
-
         # We need parent's name eg table name and schema name
         schema, table = idxcons_utils.get_parent(self.conn, tid)
         self.schema = schema
@@ -392,16 +391,13 @@ class IndexConstraintView(PGChildNodeView):
             return internal_server_error(errormsg=rset)
 
         if len(rset['rows']) == 0:
-            return gone(_("""Could not find the {} in the table.""").format(
-                _("primary key") if self.constraint_type == "p"
-                else _("unique key")
-            ))
+            return gone(self.get_error_msg())
 
         res = self.blueprint.generate_browser_node(
             rset['rows'][0]['oid'],
             tid,
             rset['rows'][0]['name'],
-            icon="icon-%s" % self.node_type
+            icon=self.icon_sign % self.node_type
         )
         return make_json_response(
             data=res,
@@ -441,7 +437,7 @@ class IndexConstraintView(PGChildNodeView):
                     row['oid'],
                     tid,
                     row['name'],
-                    icon="icon-%s" % self.node_type
+                    icon=self.icon_sign % self.node_type
                 )
             )
         return make_json_response(
@@ -449,6 +445,7 @@ class IndexConstraintView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
     def get_nodes(self, gid, sid, did, scid, tid, cid=None):
         """
         This function returns all event trigger nodes as a list.
@@ -464,11 +461,6 @@ class IndexConstraintView(PGChildNodeView):
         Returns:
 
         """
-        self.manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(sid)
-        self.conn = self.manager.connection(did=did)
-        self.template_path = 'index_constraint/sql/#{0}#'\
-            .format(self.manager.version)
-
         # We need parent's name eg table name and schema name
         schema, table = idxcons_utils.get_parent(self.conn, tid)
         self.schema = schema
@@ -486,7 +478,7 @@ class IndexConstraintView(PGChildNodeView):
                     row['oid'],
                     tid,
                     row['name'],
-                    icon="icon-%s" % self.node_type
+                    icon=self.icon_sign % self.node_type
                 ))
         return res
 
@@ -627,7 +619,7 @@ class IndexConstraintView(PGChildNodeView):
                     res['rows'][0]['oid'],
                     tid,
                     data['name'],
-                    icon="icon-%s" % self.node_type
+                    icon=self.icon_sign % self.node_type
                 )
             )
 
@@ -688,7 +680,7 @@ class IndexConstraintView(PGChildNodeView):
                     cid,
                     tid,
                     name,
-                    icon="icon-%s" % self.node_type
+                    icon=self.icon_sign % self.node_type
                 )
             )
         except Exception as e:
@@ -848,10 +840,7 @@ class IndexConstraintView(PGChildNodeView):
         if not status:
             return internal_server_error(errormsg=res)
         if len(res['rows']) == 0:
-            return gone(_("""Could not find the {} in the table.""").format(
-                _("primary key") if self.constraint_type == "p"
-                else _("unique key")
-            ))
+            return gone(self.get_error_msg())
 
         data = res['rows'][0]
         data['schema'] = self.schema
@@ -940,12 +929,7 @@ class IndexConstraintView(PGChildNodeView):
             if not status:
                 return internal_server_error(errormsg=res)
             if len(res['rows']) == 0:
-                return gone(
-                    _("""Could not find the {} in the table.""").format(
-                        _("primary key") if self.constraint_type == "p"
-                        else _("unique key")
-                    )
-                )
+                return gone(self.get_error_msg())
 
             result = res['rows'][0]
             name = result['name']
diff --git a/web/pgadmin/misc/file_manager/__init__.py b/web/pgadmin/misc/file_manager/__init__.py
index 89adacf6e..186e8c6de 100644
--- a/web/pgadmin/misc/file_manager/__init__.py
+++ b/web/pgadmin/misc/file_manager/__init__.py
@@ -33,6 +33,7 @@ from pgadmin.utils.preferences import Preferences
 # Checks if platform is Windows
 if _platform == "win32":
     import ctypes
+
     oldmode = ctypes.c_uint()
     kernel32 = ctypes.WinDLL('kernel32')
     SEM_FAILCRITICALERRORS = 1
@@ -178,6 +179,7 @@ class FileManagerModule(PgAdminModule):
 
 # Initialise the module
 blueprint = FileManagerModule(MODULE_NAME, __name__)
+mime_type = "application/javascript"
 
 
 @blueprint.route("/", endpoint='index')
@@ -195,7 +197,7 @@ def utility():
     return Response(response=render_template(
         "file_manager/js/utility.js", _=gettext),
         status=200,
-        mimetype="application/javascript")
+        mimetype=mime_type)
 
 
 @blueprint.route("/file_manager.js")
@@ -205,7 +207,7 @@ def file_manager_js():
     return Response(response=render_template(
         "file_manager/js/file_manager.js", _=gettext),
         status=200,
-        mimetype="application/javascript")
+        mimetype=mime_type)
 
 
 @blueprint.route("/en.json")
@@ -224,7 +226,7 @@ def file_manager_config_js():
     return Response(response=render_template(
         "file_manager/js/file_manager_config.js", _=gettext),
         status=200,
-        mimetype="application/javascript")
+        mimetype=mime_type)
 
 
 @blueprint.route("/<int:trans_id>/file_manager_config.json")
@@ -312,6 +314,8 @@ def save_show_hidden_file_option(trans_id):
 
 class Filemanager(object):
     """FileManager Class."""
+    error_msg_label = u"Error: {0}"
+    not_allowed_error_label = 'Not allowed'
 
     # Stores list of dict for filename & its encoding
     loaded_file_encoding_list = []
@@ -340,7 +344,6 @@ class Filemanager(object):
             capabilities: Allow/Disallow user to perform
             selection, rename, delete etc.
         """
-
         # Define configs for dialog types
         # select file, select folder, create mode
         Filemanager.suspend_windows_warning()
@@ -558,7 +561,7 @@ class Filemanager(object):
             Filemanager.check_access_permission(in_dir, path)
         except Exception as e:
             Filemanager.resume_windows_warning()
-            err_msg = gettext(u"Error: {0}").format(e)
+            err_msg = gettext(Filemanager.error_msg_label).format(e)
             files = {
                 'Code': 0,
                 'Error': err_msg
@@ -566,7 +569,7 @@ class Filemanager(object):
             return files
 
         files = {}
-        if (_platform == "win32" and (path == '/' or path == '\\'))\
+        if (_platform == "win32" and (path == '/' or path == '\\')) \
                 and in_dir is None:
             drives = Filemanager._get_drives()
             for drive in drives:
@@ -642,7 +645,7 @@ class Filemanager(object):
                     if file_type is not None and file_type != "*" and \
                         (folders_only or len(supported_types) > 0 and
                          file_extension not in supported_types or
-                            file_type != file_extension):
+                         file_type != file_extension):
                         continue
 
                 # create a list of files and folders
@@ -661,9 +664,10 @@ class Filemanager(object):
             Filemanager.resume_windows_warning()
             if (hasattr(e, 'strerror') and
                     e.strerror == gettext('Permission denied')):
-                err_msg = gettext(u"Error: {0}").format(e.strerror)
+                err_msg = gettext(Filemanager.error_msg_label).\
+                    format(e.strerror)
             else:
-                err_msg = gettext(u"Error: {0}").format(e)
+                err_msg = gettext(Filemanager.error_msg_label).format(e)
             files = {
                 'Code': 0,
                 'Error': err_msg
@@ -742,37 +746,11 @@ class Filemanager(object):
         about the given file.
         """
         path = unquote(path)
-        if hasattr(str, 'decode'):
-            path = unquote(path).encode('utf-8').decode('utf-8')
-        if self.dir is None:
-            self.dir = ""
-        orig_path = u"{0}{1}".format(self.dir, path)
-
-        try:
-            Filemanager.check_access_permission(self.dir, path)
-        except Exception as e:
-            thefile = {
-                'Filename': split_path(path)[-1],
-                'FileType': '',
-                'Path': path,
-                'Error': gettext(u"Error: {0}").format(e),
-                'Code': 0,
-                'Info': '',
-                'Properties': {
-                    'Date Created': '',
-                    'Date Modified': '',
-                    'Width': '',
-                    'Height': '',
-                    'Size': ''
-                }
-            }
-            return thefile
 
-        user_dir = path
         thefile = {
-            'Filename': split_path(orig_path)[-1],
+            'Filename': '',
             'FileType': '',
-            'Path': user_dir,
+            'Path': '',
             'Error': '',
             'Code': 1,
             'Info': '',
@@ -784,6 +762,26 @@ class Filemanager(object):
                 'Size': ''
             }
         }
+        if hasattr(str, 'decode'):
+            path = unquote(path).encode('utf-8').decode('utf-8')
+        if self.dir is None:
+            self.dir = ""
+        orig_path = u"{0}{1}".format(self.dir, path)
+
+        try:
+            Filemanager.check_access_permission(self.dir, path)
+        except Exception as e:
+            thefile['Filename'] = split_path(path)[-1]
+            thefile['Path'] = path
+            thefile['Error'] = gettext(self.error_msg_label).format(e)
+            thefile['Code'] = 0
+            return thefile
+
+        user_dir = path
+
+        thefile['Filename'] = split_path(path)[-1]
+        thefile['Path'] = user_dir
+        thefile['Code'] = 1
 
         if not path_exists(orig_path):
             thefile['Error'] = gettext(
@@ -791,7 +789,7 @@ class Filemanager(object):
             thefile['Code'] = -1
             return thefile
 
-        if split_path(user_dir)[-1] == '/'\
+        if split_path(user_dir)[-1] == '/' \
                 or os.path.isfile(orig_path) is False:
             thefile['FileType'] = 'Directory'
         else:
@@ -828,7 +826,7 @@ class Filemanager(object):
         """
         if not self.validate_request('rename'):
             return {
-                'Error': gettext('Not allowed'),
+                'Error': gettext(self.not_allowed_error_label),
                 'Code': 0
             }
 
@@ -839,7 +837,7 @@ class Filemanager(object):
             Filemanager.check_access_permission(the_dir, new)
         except Exception as e:
             res = {
-                'Error': gettext(u"Error: {0}").format(e),
+                'Error': gettext(self.error_msg_label).format(e),
                 'Code': 0
             }
             return res
@@ -893,7 +891,7 @@ class Filemanager(object):
         """
         if not self.validate_request('delete'):
             return {
-                'Error': gettext('Not allowed'),
+                'Error': gettext(self.not_allowed_error_label),
                 'Code': 0
             }
 
@@ -906,7 +904,7 @@ class Filemanager(object):
             Filemanager.check_access_permission(the_dir, path)
         except Exception as e:
             res = {
-                'Error': gettext(u"Error: {0}").format(e),
+                'Error': gettext(self.error_msg_label).format(e),
                 'Code': 0
             }
             return res
@@ -920,7 +918,7 @@ class Filemanager(object):
                 os.remove(orig_path)
         except Exception as e:
             code = 0
-            err_msg = gettext(u"Error: {0}").format(e.strerror)
+            err_msg = gettext(self.error_msg_label).format(e.strerror)
 
         result = {
             'Path': path,
@@ -936,7 +934,7 @@ class Filemanager(object):
         """
         if not self.validate_request('upload'):
             return {
-                'Error': gettext('Not allowed'),
+                'Error': gettext(self.not_allowed_error_label),
                 'Code': 0
             }
 
@@ -964,14 +962,14 @@ class Filemanager(object):
                     f.write(data)
         except Exception as e:
             code = 0
-            err_msg = gettext(u"Error: {0}").format(
+            err_msg = gettext(self.error_msg_label).format(
                 e.strerror if hasattr(e, 'strerror') else gettext(u'Unknown'))
 
         try:
             Filemanager.check_access_permission(the_dir, path)
         except Exception as e:
             res = {
-                'Error': gettext(u"Error: {0}").format(e),
+                'Error': gettext(self.error_msg_label).format(e),
                 'Code': 0
             }
             return res
@@ -1008,9 +1006,9 @@ class Filemanager(object):
         except Exception as e:
             code = 0
             if hasattr(e, 'strerror'):
-                err_msg = gettext(u"Error: {0}").format(e.strerror)
+                err_msg = gettext(self.error_msg_label).format(e.strerror)
             else:
-                err_msg = gettext(u"Error: {0}").format(e)
+                err_msg = gettext(self.error_msg_label).format(e)
 
         result = {
             'Path': path,
@@ -1061,8 +1059,7 @@ class Filemanager(object):
 
         # check if file type is text or binary
         text_chars = bytearray([7, 8, 9, 10, 12, 13, 27]) \
-            + bytearray(range(0x20, 0x7f)) \
-            + bytearray(range(0x80, 0x100))
+            + bytearray(range(0x20, 0x7f)) + bytearray(range(0x80, 0x100))
 
         def is_binary_string(bytes_data):
             """Checks if string data is binary"""
@@ -1100,13 +1097,14 @@ class Filemanager(object):
             # we don't want to expose real path of file
             # so only show error message.
             if ex.strerror == 'Permission denied':
-                err_msg = gettext(u"Error: {0}").format(ex.strerror)
+                err_msg = gettext(Filemanager.error_msg_label).\
+                    format(ex.strerror)
             else:
-                err_msg = gettext(u"Error: {0}").format(str(ex))
+                err_msg = gettext(Filemanager.error_msg_label).format(str(ex))
 
         except Exception as ex:
             status = False
-            err_msg = gettext(u"Error: {0}").format(str(ex))
+            err_msg = gettext(Filemanager.error_msg_label).format(str(ex))
 
         # Remove root storage path from error message
         # when running in Server mode
@@ -1123,7 +1121,7 @@ class Filemanager(object):
         """
         if not self.validate_request('create'):
             return {
-                'Error': gettext('Not allowed'),
+                'Error': gettext(self.not_allowed_error_label),
                 'Code': 0
             }
 
@@ -1134,7 +1132,7 @@ class Filemanager(object):
                 path, name))
         except Exception as e:
             res = {
-                'Error': gettext(u"Error: {0}").format(e),
+                'Error': gettext(self.error_msg_label).format(e),
                 'Code': 0
             }
             return res
@@ -1152,14 +1150,14 @@ class Filemanager(object):
                 os.mkdir(new_path)
             except Exception as e:
                 code = 0
-                err_msg = gettext(u"Error: {0}").format(e.strerror)
+                err_msg = gettext(self.error_msg_label).format(e.strerror)
         else:
             new_path, new_name = self.get_new_name(the_dir, path, name)
             try:
                 os.mkdir(new_path)
             except Exception as e:
                 code = 0
-                err_msg = gettext(u"Error: {0}").format(e.strerror)
+                err_msg = gettext(self.error_msg_label).format(e.strerror)
 
         result = {
             'Parent': path,
@@ -1176,7 +1174,7 @@ class Filemanager(object):
         """
         if not self.validate_request('download'):
             return {
-                'Error': gettext('Not allowed'),
+                'Error': gettext(self.not_allowed_error_label),
                 'Code': 0
             }
 
@@ -1193,7 +1191,7 @@ class Filemanager(object):
                 the_dir, u"{}{}".format(path, path)
             )
         except Exception as e:
-            resp = Response(gettext(u"Error: {0}").format(e))
+            resp = Response(gettext(self.error_msg_label).format(e))
             resp.headers['Content-Disposition'] = \
                 'attachment; filename=' + name
             return resp
@@ -1210,7 +1208,7 @@ class Filemanager(object):
         try:
             Filemanager.check_access_permission(the_dir, path)
         except Exception as e:
-            err_msg = gettext(u"Error: {0}").format(e)
+            err_msg = gettext(self.error_msg_label).format(e)
             res['Code'] = 0
             res['Error'] = err_msg
         return res
diff --git a/web/pgadmin/tools/debugger/__init__.py b/web/pgadmin/tools/debugger/__init__.py
index 3209e4f0a..832ddb027 100644
--- a/web/pgadmin/tools/debugger/__init__.py
+++ b/web/pgadmin/tools/debugger/__init__.py
@@ -72,6 +72,7 @@ class DebuggerModule(PgAdminModule):
         return scripts
 
     def register_preferences(self):
+        keyboard_shortcut_label = 'Keyboard shortcuts'
         self.open_in_new_tab = self.preference.register(
             'display', 'debugger_new_browser_tab',
             gettext("Open in new browser tab"), 'boolean', False,
@@ -89,7 +90,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 'c'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=accesskey_fields
         )
 
@@ -102,7 +103,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 's'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=accesskey_fields
         )
 
@@ -115,7 +116,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 'i'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=accesskey_fields
         )
 
@@ -128,7 +129,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 'o'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=accesskey_fields
         )
 
@@ -141,7 +142,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 't'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=accesskey_fields
         )
 
@@ -154,7 +155,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 'x'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=accesskey_fields
         )
 
@@ -172,7 +173,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 'q'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=shortcut_fields
         )
 
@@ -190,7 +191,7 @@ class DebuggerModule(PgAdminModule):
                     'char': '['
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=shortcut_fields
         )
 
@@ -208,7 +209,7 @@ class DebuggerModule(PgAdminModule):
                     'char': ']'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=shortcut_fields
         )
 
@@ -226,7 +227,7 @@ class DebuggerModule(PgAdminModule):
                     'char': 'Tab'
                 }
             },
-            category_label=gettext('Keyboard shortcuts'),
+            category_label=gettext(keyboard_shortcut_label),
             fields=shortcut_fields
         )
 
@@ -258,6 +259,9 @@ class DebuggerModule(PgAdminModule):
 
 
 blueprint = DebuggerModule(MODULE_NAME, __name__)
+mime_type = "application/javascript"
+server_connection_error_label = \
+    'Not connected to server or connection with the server has been closed.'
 
 
 @blueprint.route("/", endpoint='index')
@@ -275,7 +279,7 @@ def script():
     return Response(
         response=render_template("debugger/js/debugger.js", _=gettext),
         status=200,
-        mimetype="application/javascript"
+        mimetype=mime_type
     )
 
 
@@ -286,7 +290,7 @@ def script_debugger_js():
     return Response(
         response=render_template("debugger/js/debugger_ui.js", _=gettext),
         status=200,
-        mimetype="application/javascript"
+        mimetype=mime_type
     )
 
 
@@ -300,7 +304,7 @@ def script_debugger_direct_js():
     return Response(
         response=render_template("debugger/js/direct.js", _=gettext),
         status=200,
-        mimetype="application/javascript"
+        mimetype=mime_type
     )
 
 
@@ -833,10 +837,7 @@ def restart_debugging(trans_id):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -876,10 +877,7 @@ def restart_debugging(trans_id):
         )
     else:
         status = False
-        result = gettext(
-            'Not connected to server or connection with the server has '
-            'been closed.'
-        )
+        result = gettext(server_connection_error_label)
         return make_json_response(data={'status': status, 'result': result})
 
 
@@ -905,10 +903,7 @@ def start_debugger_listener(trans_id):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -1097,19 +1092,13 @@ def start_debugger_listener(trans_id):
                 )
             else:
                 status = False
-                result = gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                result = gettext(server_connection_error_label)
                 return make_json_response(
                     data={'status': status, 'result': result}
                 )
     else:
         status = False
-        result = gettext(
-            'Not connected to server or connection with the server has '
-            'been closed.'
-        )
+        result = gettext(server_connection_error_label)
 
     return make_json_response(data={'status': status, 'result': result})
 
@@ -1142,10 +1131,7 @@ def execute_debugger_query(trans_id, query_type):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -1161,8 +1147,7 @@ def execute_debugger_query(trans_id, query_type):
         else DEBUGGER_SQL_V2_PATH
 
     if not conn.connected():
-        result = gettext('Not connected to server or connection '
-                         'with the server has been closed.')
+        result = gettext(server_connection_error_label)
         return internal_server_error(errormsg=result)
 
     sql = render_template(
@@ -1219,10 +1204,7 @@ def messages(trans_id):
         return make_json_response(
             data={
                 'status': 'NotConnected',
-                'result': gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -1257,10 +1239,7 @@ def messages(trans_id):
             data={'status': status, 'result': port_number}
         )
     else:
-        result = gettext(
-            'Not connected to server or connection with the '
-            'server has been closed.'
-        )
+        result = gettext(server_connection_error_label)
         return internal_server_error(errormsg=str(result))
 
 
@@ -1289,10 +1268,7 @@ def start_execution(trans_id, port_num):
         return make_json_response(
             data={
                 'status': 'NotConnected',
-                'result': gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -1368,10 +1344,7 @@ def set_clear_breakpoint(trans_id, line_no, set_type):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext(
-                    'Not connected to server or connection with the server '
-                    'has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -1425,10 +1398,7 @@ def set_clear_breakpoint(trans_id, line_no, set_type):
             return internal_server_error(errormsg=result)
     else:
         status = False
-        result = gettext(
-            'Not connected to server or connection with the server '
-            'has been closed.'
-        )
+        result = gettext(server_connection_error_label)
 
     return make_json_response(
         data={'status': status, 'result': result['rows']}
@@ -1456,10 +1426,7 @@ def clear_all_breakpoint(trans_id):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext(
-                    'Not connected to server or connection '
-                    'with the server has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
     manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(
@@ -1494,9 +1461,7 @@ def clear_all_breakpoint(trans_id):
             return make_json_response(data={'status': False})
     else:
         status = False
-        result = gettext(
-            'Not connected to server or connection with the server has '
-            'been closed.')
+        result = gettext(server_connection_error_label)
 
     return make_json_response(
         data={'status': status, 'result': result['rows']}
@@ -1524,8 +1489,7 @@ def deposit_parameter_value(trans_id):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext('Not connected to server or connection '
-                                  'with the server has been closed.')
+                'result': gettext(server_connection_error_label)
             }
         )
     manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(
@@ -1572,10 +1536,7 @@ def deposit_parameter_value(trans_id):
             )
     else:
         status = False
-        result = gettext(
-            'Not connected to server or connection with the server has '
-            'been closed.'
-        )
+        result = gettext(server_connection_error_label)
 
     return make_json_response(data={'status': status, 'result': result})
 
@@ -1602,10 +1563,7 @@ def select_frame(trans_id, frame_id):
         return make_json_response(
             data={
                 'status': False,
-                'result': gettext(
-                    'Not connected to server or connection '
-                    'with the server has been closed.'
-                )
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -1637,10 +1595,7 @@ def select_frame(trans_id, frame_id):
             return internal_server_error(errormsg=result)
     else:
         status = False
-        result = gettext(
-            'Not connected to server or connection with the server '
-            'has been closed.'
-        )
+        result = gettext(server_connection_error_label)
 
     return make_json_response(
         data={'status': status, 'result': result['rows']}
@@ -1918,9 +1873,7 @@ def poll_end_execution_result(trans_id):
     if de_inst.debugger_data is None:
         return make_json_response(
             data={'status': 'NotConnected',
-                  'result': gettext(
-                      'Not connected to server or connection with the '
-                      'server has been closed.')
+                  'result': gettext(server_connection_error_label)
                   }
         )
 
@@ -2019,8 +1972,7 @@ def poll_end_execution_result(trans_id):
             )
     else:
         status = 'NotConnected'
-        result = gettext('Not connected to server or connection with the '
-                         'server has been closed.')
+        result = gettext(server_connection_error_label)
 
     return make_json_response(data={'status': status, 'result': result})
 
@@ -2046,8 +1998,7 @@ def poll_result(trans_id):
         return make_json_response(
             data={
                 'status': 'NotConnected',
-                'result': gettext('Not connected to server or connection '
-                                  'with the server has been closed.')
+                'result': gettext(server_connection_error_label)
             }
         )
 
@@ -2068,10 +2019,7 @@ def poll_result(trans_id):
             status = 'Busy'
     else:
         status = 'NotConnected'
-        result = gettext(
-            'Not connected to server or connection with the server '
-            'has been closed.'
-        )
+        result = gettext(server_connection_error_label)
 
     return make_json_response(
         data={
diff --git a/web/pgadmin/tools/grant_wizard/__init__.py b/web/pgadmin/tools/grant_wizard/__init__.py
index 79c5529c4..995e44856 100644
--- a/web/pgadmin/tools/grant_wizard/__init__.py
+++ b/web/pgadmin/tools/grant_wizard/__init__.py
@@ -183,6 +183,8 @@ def properties(sid, did, node_id, node_type):
     """It fetches the properties of object types
        and render into selection page of wizard
     """
+    function_sql_url = '/sql/function.sql'
+    get_schema_sql_url = '/sql/get_schemas.sql'
 
     # unquote encoded url parameter
     node_type = unquote(node_type)
@@ -202,7 +204,7 @@ def properties(sid, did, node_id, node_type):
         # Get sys_obj_values and get list of schemas
         ntype = 'schema'
         SQL = render_template("/".join(
-            [server_prop['template_path'], '/sql/get_schemas.sql']),
+            [server_prop['template_path'], get_schema_sql_url]),
             show_sysobj=show_sysobj)
         status, res = conn.execute_dict(SQL)
 
@@ -211,7 +213,7 @@ def properties(sid, did, node_id, node_type):
         node_types = res['rows']
     else:
         SQL = render_template("/".join(
-            [server_prop['template_path'], '/sql/get_schemas.sql']),
+            [server_prop['template_path'], get_schema_sql_url]),
             nspid=node_id, show_sysobj=False)
         status, res = conn.execute_dict(SQL)
 
@@ -227,7 +229,7 @@ def properties(sid, did, node_id, node_type):
         # Fetch functions against schema
         if ntype in ['schema', 'function']:
             SQL = render_template("/".join(
-                [server_prop['template_path'], '/sql/function.sql']),
+                [server_prop['template_path'], function_sql_url]),
                 node_id=node_id, type='function')
 
             status, res = conn.execute_dict(SQL)
@@ -244,7 +246,7 @@ def properties(sid, did, node_id, node_type):
               server_prop['version'] >= 11000)) and
                 ntype in ['schema', 'procedure']):
             SQL = render_template("/".join(
-                [server_prop['template_path'], '/sql/function.sql']),
+                [server_prop['template_path'], function_sql_url]),
                 node_id=node_id, type='procedure')
 
             status, res = conn.execute_dict(SQL)
@@ -258,7 +260,7 @@ def properties(sid, did, node_id, node_type):
         # Fetch trigger functions
         if ntype in ['schema', 'trigger_function']:
             SQL = render_template("/".join(
-                [server_prop['template_path'], '/sql/function.sql']),
+                [server_prop['template_path'], function_sql_url]),
                 node_id=node_id, type='trigger_function')
             status, res = conn.execute_dict(SQL)