Cannot find cause of error

[tomdchi]

We have a fairly large ExtJS app and I recently began to log javascript errors. Most of the time I can track down the source of the error but there are a couple of errors that get logged frequently where I cannot determine the source of the error. Not sure if anyone here can help with this since I am not able to share source code but I thought I would give it a shot.

Here are the errors:

{
   "msg": "Uncaught TypeError: Cannot read property 'style' of null",
   "url": "https://domain.com/app.js?_dc=20191015104141",
   "line": "1",
   "href": "https://domain.com",
   "windowWidth": "1536",
   "windowHeight": "723",
   "extVersion": "6.7.0.212",
   "localDate": "Thu Oct 17 2019 11:42:06 GMT-0700 (Pacific Daylight Time)",
   "browser": "Chrome77",
   "column": "349376",
   "stack": "TypeError: Cannot read property 'style' of null\n    
   at ctor.setStyle (https://domain.com/app.js?_dc=20191015104141:1:349376)\n    
   at ctor.setZIndex (https://domain.com/app.js?_dc=20191015104141:1:351302)\n    
   at ctor.setZIndex (https://domain.com/app.js?_dc=20191015104141:1:550953)\n    
   at ctor.onCollectionSort (https://domain.com/app.js?_dc=20191015104141:1:1034373)\n    
   at ctor.notify (https://domain.com/app.js?_dc=20191015104141:1:654233)\n    
   at ctor.sortItems (https://domain.com/app.js?_dc=20191015104141:1:656000)\n    
   at ctor.onSortChange (https://domain.com/app.js?_dc=20191015104141:1:655673)\n    
   at ctor.onEndUpdateSorters (https://domain.com/app.js?_dc=20191015104141:1:657335)\n    
   at ctor.fire (https://domain.com/app.js?_dc=20191015104141:1:182943)\n    
   at ctor.doFireEvent (https://domain.com/app.js?_dc=20191015104141:1:190453)"
}

{
   "msg": "Uncaught TypeError: Cannot read property 'parentNode' of null",
   "url": "https://domain.com/app.js?_dc=20191015104141",
   "line": "1",
   "href": "https://domain.com",
   "windowWidth": "1536",
   "windowHeight": "754",
   "extVersion": "6.7.0.212",
   "localDate": "Wed Oct 16 2019 16:29:43 GMT-0700 (Pacific Daylight Time)",
   "browser": "Chrome77",
   "column": "1893421",
   "stack": "TypeError: Cannot read property 'parentNode' of null\n    
   at ctor.activateCell (https://domain.com/app.js?_dc=20191015104141:1:1893421)\n    
   at ctor.activateCell (https://domain.com/app.js?_dc=20191015104141:1:1688686)\n    
   at ctor.setActionableMode (https://domain.com/app.js?_dc=20191015104141:1:1687457)\n    
   at ctor.setActionableMode (https://domain.com/app.js?_dc=20191015104141:1:1618286)\n    
   at ctor.onCellClick (https://domain.com/app.js?_dc=20191015104141:1:1889434)\n    
   at ctor.fire (https://domain.com/app.js?_dc=20191015104141:1:182943)\n    
   at ctor.doFireEvent (https://domain.com/app.js?_dc=20191015104141:1:190453)\n    
   at ctor.doFireEvent (https://domain.com/app.js?_dc=20191015104141:1:589079)\n    
   at ctor.b.doFireEvent (https://domain.com/app.js?_dc=20191015104141:1:521890)\n    
   at ctor.fireEventArgs (https://domain.com/app.js?_dc=20191015104141:1:189355)"

The column numbers of where the error starts is not our code but the framework. Would that indicate the problem is with the framework and not necessarily our code?

[praveensaini23]

Hi Tomdchi,

By seeing your error logs, I am guessing that those errors are coming after the grid actions like sorting, cellediting start etc.
So the problem might be with your grid editor(if you have used any).

But not sure 100% as there is no live error scenario to debug.