The issue is not reproducible on demo:
https://om.alteametasoft.com/openmeetings (FF latest at Ubuntu)
Will try with local installation

On Tue, 25 Feb 2020 at 23:36, Holger Schranz <hol...@fam-schranz.de> wrote:

> Hi Maxim,
>
> A1) I don't use https
> A2) direct
> A3) Always with firefox ... I tested rigth now with opera ans it seems it
> runs well.
>      no problem since 15 min.
>
> I hope this helps..
> Best regards
>
> Holger
> Am 25.02.20 um 17:15 schrieb Maxim Solodovnik:
>
> This weird error happens from time to time
> Are you using https?
> is it direct or via proxy?
> What browser are you using?
>
> Is it reproducible using other browser?
>
>
> On Tue, 25 Feb 2020 at 22:49, Holger Schranz <hol...@fam-schranz.de>
> wrote:
>
>> Hi Maxim,
>>
>> here is the part of the openmeetingslog.
>>
>> Best regards
>>
>> Holger
>>
>>
>> ================================================================================
>>
>>  EBUG 02-25 12:02:26.553 o.a.o.w.c.MainPanel:200 [0.0-5080-exec-5] -
>> WebSocketBehavior::closeHandler [uid: 070c6030-6490-4205-81e6-1ce24c26be8d,
>> session: 27EA736B6F3B065C7B88863DCF245A72, key:
>> org.apache.wicket.protocol.ws.api.registry.PageIdKey@0]
>> DEBUG 02-25 12:02:26.553 o.a.o.w.a.ClientManager:194 [0.0-5080-exec-5] -
>> Removing online room client: 070c6030-6490-4205-81e6-1ce24c26be8d, room:
>> null
>> DEBUG 02-25 12:02:26.553 o.a.o.w.a.ClientManager:149 [0.0-5080-exec-5] -
>> Removing online client: 070c6030-6490-4205-81e6-1ce24c26be8d, roomId: null
>> DEBUG 02-25 12:02:47.087 o.a.o.s.q.s.ReminderJob:94 [Bean#0_Worker-4] -
>> Rss disabled by Admin
>> DEBUG 02-25 12:04:33.233 o.a.o.d.d.u.UserDao:640 [0.0-5080-exec-9] -
>> login:: 1 users were found
>> DEBUG 02-25 12:04:33.719 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-9] -
>> Level Login :: [GRANTED]
>> DEBUG 02-25 12:04:33.722 o.a.o.d.d.u.UserDao:657 [0.0-5080-exec-9] -
>> loginUser [GroupUser [id=1, moderator=false, group=Group [id=1,
>> name=Privat, deleted=false], user=User [id=1, firstname=firstname,
>> lastname=lastname, login=Holger, pictureuri=null, deleted=false,
>> languageId=2, address=Address [id=1, country=DE, street=null, town=null,
>> zip=null, deleted=false, email=hol...@fam-schranz.de, phone=null],
>> externalId=null, externalType=null, type=user]]]
>> DEBUG 02-25 12:04:33.727 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-9] -
>> Level Admin :: [GRANTED]
>> DEBUG 02-25 12:04:33.795 o.a.o.w.p.MainPage:66 [0.0-5080-exec-5] -
>> MainPage::delayedLoad
>> DEBUG 02-25 12:04:33.807 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-5] -
>> Level Admin :: [GRANTED]
>> DEBUG 02-25 12:04:33.812 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-5] -
>> Level Admin :: [GRANTED]
>> DEBUG 02-25 12:04:33.813 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-5] -
>> Level Admin :: [GRANTED]
>> DEBUG 02-25 12:04:34.272 o.a.o.w.a.ClientManager:94 [0.0-5080-exec-8] -
>> Adding online client: 095eaa38-3e86-4141-b84f-ce2407d80298, room: null
>> DEBUG 02-25 12:04:34.274 o.a.o.w.c.MainPanel:156 [0.0-5080-exec-8] -
>> WebSocketBehavior::onConnect [uid: 095eaa38-3e86-4141-b84f-ce2407d80298,
>> session: 01331A345450DF2EBBC8E1843F299A9E, key:
>> org.apache.wicket.protocol.ws.api.registry.PageIdKey@0]
>> DEBUG 02-25 12:04:34.277 o.a.o.w.c.MainPanel:165 [0.0-5080-exec-6] -
>> WebSocketBehavior:: pingTimer is attached
>> DEBUG 02-25 12:04:34.280 o.a.o.w.p.MainPage:101 [0.0-5080-exec-3] -
>> MainPage::onParameterArrival
>> DEBUG 02-25 12:04:34.307 o.a.o.w.p.MainPage:52 [0.0-5080-exec-1] -
>> MainPage::areaBehavior
>> DEBUG 02-25 12:04:34.326 o.a.o.w.c.MainPanel:418 [0.0-5080-exec-1] -
>> updateContents:: npanels IS null ? false, client IS null ? false
>> DEBUG 02-25 12:04:34.341 o.a.o.d.d.r.RoomDao:245 [0.0-5080-exec-1] -
>> getUserRoom : 1 || conference
>> DEBUG 02-25 12:04:34.345 o.a.o.d.d.r.RoomDao:245 [0.0-5080-exec-1] -
>> getUserRoom : 1 || presentation
>> DEBUG 02-25 12:04:34.347 o.a.o.d.d.r.RoomDao:181 [0.0-5080-exec-1] -
>> getAppointedRoomsByUser : UserID - 1
>> DEBUG 02-25 12:05:04.296 o.a.o.d.d.u.UserDao:640 [0.0-5080-exec-6] -
>> login:: 1 users were found
>> DEBUG 02-25 12:05:04.771 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-6] -
>> Level Login :: [GRANTED]
>> DEBUG 02-25 12:05:04.772 o.a.o.d.d.u.UserDao:657 [0.0-5080-exec-6] -
>> loginUser [GroupUser [id=1, moderator=false, group=Group [id=1,
>> name=Privat, deleted=false], user=User [id=1, firstname=firstname,
>> lastname=lastname, login=Holger, pictureuri=null, deleted=false,
>> languageId=2, address=Address [id=1, country=DE, street=null, town=null,
>> zip=null, deleted=false, email=hol...@fam-schranz.de, phone=null],
>> externalId=null, externalType=null, type=user]]]
>> DEBUG 02-25 12:05:04.779 o.a.o.d.u.AuthLevelUtil:42 [0.0-5080-exec-6] -
>> Level Admin :: [GRANTED]
>> ERROR 02-25 12:05:04.780 o.a.w.DefaultExceptionMapper:170
>> [0.0-5080-exec-6] - Unexpected error occurred
>> org.apache.wicket.behavior.InvalidBehaviorIdException: Cannot find
>> behavior with id '0' on component
>> 'org.apache.wicket.markup.html.panel.EmptyPanel:main-container:main' in
>> page '[Page class = org.apache.openmeetings.web.pages.MainPage, id = 0,
>> render count = 0]'. Perhaps the behavior did not properly implement
>> getStatelessHint() and returned 'true' to indicate that it is stateless
>> instead of returning 'false' to indicate that it is stateful.
>>         at org.apache.wicket.Behaviors.getBehaviorById(Behaviors.java:318)
>>         at
>> org.apache.wicket.Component.getBehaviorById(Component.java:4439)
>>         at
>> org.apache.wicket.core.request.handler.ListenerRequestHandler.invokeListener(ListenerRequestHandler.java:221)
>>         at
>> org.apache.wicket.core.request.handler.ListenerRequestHandler.respond(ListenerRequestHandler.java:208)
>>         at
>> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:914)
>>         at
>> org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65)
>>         at
>> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:282)
>>         at
>> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253)
>>         at
>> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221)
>>         at
>> org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70)
>>         at
>> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:206)
>>         at
>> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:299)
>>         at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>         at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>         at
>> org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:84)
>>         at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>         at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>         at
>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
>>         at
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
>>         at
>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:643)
>>         at
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
>>         at
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
>>         at
>> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
>>         at
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
>>         at
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
>>         at
>> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
>>         at
>> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
>>         at
>> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
>>         at
>> org.apache.tomcat.util.net.Nio2Endpoint$SocketProcessor.doRun(Nio2Endpoint.java:1682)
>>         at
>> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
>>         at
>> org.apache.tomcat.util.net.AbstractEndpoint.processSocket(AbstractEndpoint.java:1105)
>>         at
>> org.apache.tomcat.util.net.Nio2Endpoint$Nio2SocketWrapper$2.completed(Nio2Endpoint.java:596)
>>         at
>> org.apache.tomcat.util.net.Nio2Endpoint$Nio2SocketWrapper$2.completed(Nio2Endpoint.java:574)
>>         at java.base/sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:127)
>>         at java.base/sun.nio.ch.Invoker$2.run(Invoker.java:219)
>>         at
>> java.base/sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
>>         at
>> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
>>         at
>> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
>>         at
>> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>>         at java.base/java.lang.Thread.run(Thread.java:834)
>> DEBUG 02-25 12:05:04.787 o.a.o.w.c.MainPanel:200 [0.0-5080-exec-8] -
>> WebSocketBehavior::closeHandler [uid: 095eaa38-3e86-4141-b84f-ce2407d80298,
>> session: 01331A345450DF2EBBC8E1843F299A9E, key:
>> org.apache.wicket.protocol.ws.api.registry.PageIdKey@0]
>> DEBUG 02-25 12:05:04.788 o.a.o.w.a.ClientManager:194 [0.0-5080-exec-8] -
>> Removing online room client: 095eaa38-3e86-4141-b84f-ce2407d80298, room:
>> null
>> DEBUG 02-25 12:05:04.788 o.a.o.w.a.ClientManager:149 [0.0-5080-exec-8] -
>> Removing online client: 095eaa38-3e86-4141-b84f-ce2407d80298, roomId: null
>> DEBUG 02-25 12:12:47.087 o.a.o.s.q.s.ReminderJob:94 [Bean#0_Worker-6] -
>> Rss disabled by Admin
>> DEBUG 02-25 12:22:47.086 o.a.o.s.q.s.ReminderJob:94 [Bean#0_Worker-4] -
>> Rss disabled by Admin
>>
>>
>> Am 25.02.20 um 16:35 schrieb Maxim Solodovnik:
>>
>> The log attached is `access.log`
>> please check openmeetings.log to check the root cause
>>
>> On Tue, 25 Feb 2020 at 22:20, Holger Schranz <hol...@fam-schranz.de>
>> wrote:
>>
>>> Hello,
>>>
>>> after install OM 4.0.10, at the first test it looks fine.
>>>
>>> But after 4/5 min. I got the error below.:
>>> If I go back to the Homepage I get the same behavior.
>>> In Cycle all 4/5 min.
>>>
>>> I have attach a part of the logfile and the picture.
>>>
>>> Best regards
>>>
>>> Holger
>>>
>>>
>>> ===================================================================================
>>>
>>>
>>> Environment: Fedora Srv. 32, Kernel 5.5.5-200.
>>> Used Install description for Fedora 31 from ALavro
>>>
>>>
>>> [image: Intgernal Error]
>>>
>>> 127.0.0.1 - - [25/Feb/2020:12:30:29 +0100] "GET
>>> /openmeetings/css/theme_om/images/ui-icons_3d80b3_256x240.png HTTP/1.1" 304
>>> -
>>> 127.0.0.1 - - [25/Feb/2020:12:30:29 +0100] "GET
>>> /openmeetings/;jsessionid=BDBF992AD418159505817F919290EFE9?0-1.2-main~container-main&navigatorAppName=Netscape&navigatorAppVersion=5.0%20(X11)&navigatorAppCodeName=Mozilla&navigatorCookieEnabled=true&navigatorJavaEnabled=false&navigatorLanguage=de-DE&navigatorPlatform=Linux%20x86_64&navigatorUserAgent=Mozilla%2F5.0%20(X11%3B%20Fedora%3B%20Linux%20x86_64%3B%20rv%3A73.0)%20Gecko%2F20100101%20Firefox%2F73.0&screenWidth=3840&screenHeight=2160&screenColorDepth=24&utcOffset=1&utcDSTOffset=2&browserWidth=1760&browserHeight=1155&hostname=localhost&codebase=http%3A%2F%2Flocalhost%3A5080%2Fopenmeetings%2F&settings=%5Bobject%20Object%5D&_=1582630226948
>>> HTTP/1.1" 200 80
>>> 127.0.0.1 - - [25/Feb/2020:12:30:31 +0100] "GET
>>> /openmeetings/wicket/resource/org.wicketstuff.dashboard.web.DashboardSettings/res/delete.gif
>>> HTTP/1.1" 200 351
>>> 127.0.0.1 - - [25/Feb/2020:12:30:31 +0100] "GET
>>> /openmeetings/wicket/resource/org.wicketstuff.dashboard.web.DashboardSettings/res/refresh.gif
>>> HTTP/1.1" 200 925
>>> 127.0.0.1 - - [25/Feb/2020:12:30:59 +0100] "GET
>>> /openmeetings/?0-1.0-main~container-main&_=1582630226949 HTTP/1.1" 200 194
>>> 127.0.0.1 - - [25/Feb/2020:12:31:00 +0100] "GET
>>> /openmeetings/wicket/bookmarkable/org.apache.wicket.markup.html.pages.InternalErrorPage;jsessionid=034007721D9A6D8360ED4BC41F6E13F4
>>> HTTP/1.1" 500 1447
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET /openmeetings/ HTTP/1.1"
>>> 200 3779
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/;jsessionid=BDF55BAE4E4D636427FF3B2143DECE36?0-1.0-&_=1582630510196
>>> HTTP/1.1" 200 33334
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/public/chat_message.mp3 HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme_om/jquery-ui.min.css HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme_om/jquery-ui.min.css HTTP/1.1" 200 31071
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme.min.css HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme.min.css HTTP/1.1" 200 44598
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/custom.css HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/custom.css HTTP/1.1" 200 112
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme_om/images/ui-icons_ffffff_256x240.png HTTP/1.1" 304
>>> -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/wicket/websocket;jsessionid=BDF55BAE4E4D636427FF3B2143DECE36?pageId=0&wicket-ajax-baseurl=.&wicket-app-name=OpenmeetingsApplication
>>> HTTP/1.1" 101 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/;jsessionid=BDF55BAE4E4D636427FF3B2143DECE36?0-1.1-&&_=1582630510197
>>> HTTP/1.1" 200 80
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/settings.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/link.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/list.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/images/ajax-loader.gif HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/;jsessionid=BDF55BAE4E4D636427FF3B2143DECE36?0-1.0-main~container&_=1582630510198
>>> HTTP/1.1" 200 34846
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme_om/images/ui-icons_72a7cf_256x240.png HTTP/1.1" 304
>>> -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme_om/images/ui-icons_2e83ff_256x240.png HTTP/1.1" 304
>>> -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/information.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/logo.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/profile/1;jsessionid=BDF55BAE4E4D636427FF3B2143DECE36?anticache=1574954534000
>>> HTTP/1.1" 200 17769
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/wizzard_button_2.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/wizzard_button_4.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/wizzard_button_1.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/images/wizzard_button_3.png HTTP/1.1" 304 -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/css/theme_om/images/ui-icons_3d80b3_256x240.png HTTP/1.1" 304
>>> -
>>> 127.0.0.1 - - [25/Feb/2020:12:35:10 +0100] "GET
>>> /openmeetings/;jsessionid=BDF55BAE4E4D636427FF3B2143DECE36?0-1.2-main~container-main&navigatorAppName=Netscape&navigatorAppVersion=5.0%20(X11)&navigatorAppCodeName=Mozilla&navigatorCookieEnabled=true&navigatorJavaEnabled=false&navigatorLanguage=de-DE&navigatorPlatform=Linux%20x86_64&navigatorUserAgent=Mozilla%2F5.0%20(X11%3B%20Fedora%3B%20Linux%20x86_64%3B%20rv%3A73.0)%20Gecko%2F20100101%20Firefox%2F73.0&screenWidth=3840&screenHeight=2160&screenColorDepth=24&utcOffset=1&utcDSTOffset=2&browserWidth=1760&browserHeight=1155&hostname=localhost&codebase=http%3A%2F%2Flocalhost%3A5080%2Fopenmeetings%2F&settings=%5Bobject%20Object%5D&_=1582630510199
>>> HTTP/1.1" 200 80
>>> 127.0.0.1 - - [25/Feb/2020:12:35:41 +0100] "GET
>>> /openmeetings/?0-1.0-main~container-main&_=1582630510200 HTTP/1.1" 200 194
>>> 127.0.0.1 - - [25/Feb/2020:12:35:41 +0100] "GET
>>> /openmeetings/wicket/bookmarkable/org.apache.wicket.markup.html.pages.InternalErrorPage;jsessionid=36DAA0440EB565CCEF555FC704A19FE3
>>> HTTP/1.1" 500 1447
>>>
>>>
>>>
>>>
>>>
>>>
>>
>> --
>> WBR
>> Maxim aka solomax
>>
>>
>
> --
> WBR
> Maxim aka solomax
>
>

-- 
WBR
Maxim aka solomax

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