Over the last couple months we have been experiencing a new issue with Hatch
and Chrome. Randomly on a handful of our computers we will start getting "white
screens" when navigating to the various pages in the staff client. Often
clicking on a menu item a second time loads the page. Some pages like Check Out
need a page refresh before they work. The problem seems to be worse when you
are doing everything in a single tab. You are lucky to get one page to load
before the issue comes back.
In the past this was often fixed by clearing the cache. This has no impact on
this issue. No amount of cache clearing seems to work.
Sometimes just sitting in Developer tools -> Application allows the pages to
load maybe 80% of the time. Also, setting a break point on line 89 of
extension.js and manually continuing the code allows all pages to load. Putting
a 2 second delay right in the code has no effect.
We have tried many things but so far the quickest solution is to delete the
following folder:
C:\Users\<insert your username>\AppData\Local\Google
We have also done full Chrome reinstalls making sure we remove all profile
information.
Reinstalling Hatch has no effect. Disabling Ninite, Firewall and AntiVirus had
no effect. Most of these machines are stand alone workstations. So far only 1
has been on Active Directory.
Watching the Hatch extension in the console it looks like things happen out of
sequence when the page loads fail. The message port is removed before the
message is received.
Works
extension.js:113 Removing port 28 on tab disconnect
extension.js:89 new port connected with id 28
extension.js:92 Received message from browser on port 28
Doesn't Work
extension.js:89 new port connected with id 28
extension.js:113 Removing port 28 on tab disconnect
extension.js:92 Received message from browser on port 28
Watching the Hatch logs it appears that Hatch does indeed respond.
2021-12-08 11:16:58 FINEST MessageReader read:
{"key":"eg.workstation.all","action":"get","msgid":1,"from":"page","clientid":28,"origin":"https://evergreen.owwl.org"}
2021-12-08 11:16:58 INFO Received message id=1 action=get
2021-12-08 11:16:58 FINEST MessageWriter sending:
{"clientid":28,"msgid":1,"message":"OK","content":[{"owning_lib":807,"name":"PLSHQ-plsstaff114a","id":"3435"},{"owning_lib":807,"name":"PLSHQ-PLSSTFX1114","id":"3462"},{"owning_lib":807,"name":"PLSHQ-PLSSTFx1114","id":"3288"}],"status":200}
Chromes main console output l ooks like this when it works:
content.js:21 Loading Hatch relay content script
core.bundle.js:1 egNet open-ils.auth.session.retrieve
opensrf_ws.js:46 pending count 1
opensrf_ws.js:59 connecting websocket to
wss://evergreen.owwl.org:443/osrf-websocket-translator
jquery.min.js:2 [Violation] 'setTimeout' handler took 60ms
opensrf_ws.js:69 websocket.onopen()
opensrf_ws.js:72 pending count 1
core.bundle.js:1 sending to Hatch:
{"key":"eg.workstation.all","action":"get","msgid":1}
core.bundle.js:1 Hatch responded to message ID 1
core.bundle.js:1 egEnv loading classes => aou
core.bundle.js:1 serving org tree from cache
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/upup.min.js.map: HTTP error: status code 404,
net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/css/bootstrap.min.css.map:
HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/js/moment-with-locales.min.js.map:
HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/js/lovefield.min.js.map:
HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
core.bundle.js:1 egEnv load complete
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/js/iframeResizer.map: HTTP
error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
4core.bundle.js:1 egNet open-ils.auth.session.retrieve
Looks like this when it fails
content.js:21 Loading Hatch relay content script
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/upup.min.js.map: HTTP error: status code 404,
net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/css/bootstrap.min.css.map:
HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
core.bundle.js:1 egNet open-ils.auth.session.retrieve
opensrf_ws.js:46 pending count 1
opensrf_ws.js:59 connecting websocket to
wss://evergreen.owwl.org:443/osrf-websocket-translator
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/js/lovefield.min.js.map:
HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/js/moment-with-locales.min.js.map:
HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load source map: Could not load content for
https://evergreen.owwl.org/js/ui/default/staff/build/js/iframeResizer.map: HTTP
error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
jquery.min.js:2 [Violation] 'setTimeout' handler took 55ms
opensrf_ws.js:69 websocket.onopen()
opensrf_ws.js:72 pending count 1
core.bundle.js:1 sending to Hatch:
{"key":"eg.workstation.all","action":"get","msgid":1}
Help?
Bob Wicksall
Computer and Network Services Manager
Pioneer Library System
2557 State Rt. 21
Canandaigua, New York 14424
Voice: (585) 394-8260 ext. 1110
Fax: (585) 394-1935
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