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Uncaught TypeError: Cannot read property 'type' of undefined at prepareSplice
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Description

During a new page creation on Hebrew Wikipedia the following error occurred:

at prepareSplice  URL1:139:975
at Object.ve.dm.TreeModifier.static.applyTreeOperation  URL1:141:331
at Object.ve.dm.TreeModifier.static.applyTreeOperations  URL1:137:138
at VeDmTreeModifier.ve.dm.TreeModifier.process  URL1:143:101
at VeDmTransactionProcessor.ve.dm.TransactionProcessor.process  URL1:89:41
at VeDmDocument.ve.dm.Document.commit  URL1:211:626
at VeDmSurface.ve.dm.Surface.changeInternal  URL1:172:489
at VeDmSurface.ve.dm.Surface.change  URL1:172:1
at VeDmSurfaceFragment.ve.dm.SurfaceFragment.change  URL1:182:416
at VeDmSurfaceFragment.ve.dm.SurfaceFragment.insertDocument  URL1:194:43

URL1: https://he.wikipedia.org/w/load.php?lang=he&modules=ext.visualEditor.core&skin=vector&version=mc4q2

https://logstash.wikimedia.org/app/kibana#/doc/logstash-*/logstash-2020.09.14/clienterror/?id=AXSOHNqbNoG2jwpwBWyk

Event Timeline

JTannerWMF subscribed.

We will take a look at this due to his relevance with page curation

I'm not sure this necessarily related to page creation. Without knowing the state of the document at the time, it's going to be hard to reproduce.

Jdlrobson renamed this task from Uncaught TypeError: Cannot read property 'type' of undefined to Uncaught TypeError: Cannot read property 'type' of undefined at prepareSplice.Dec 18 2020, 4:40 PM
matmarex subscribed.

There have been zero occurences of this error in the logs in the past 3 months (older data is not available). I don't think this is worth investigating.

ppelberg claimed this task.