[Evergreen-general] Issues with Hatch and Chrome

[Bob Wicksall]

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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