Possible dupe of T140871 but opening new ticket per @Esanders
https://logstash.wikimedia.org/app/dashboards#/doc/logstash-*/logstash-2021.03.16?id=j3UtPHgBg_6mGHGhBf6a
High priority relative to other production errors
at VeDmTransactionProcessor.ve.dm.TransactionProcessor.process URL1:89:831 at VeDmDocument.ve.dm.Document.commit URL1:212:942 at VeDmSurface.ve.dm.Surface.changeInternal URL1:173:744 at VeDmSurface.ve.dm.Surface.change URL1:173:256 at VeDmSurfaceFragment.ve.dm.SurfaceFragment.change URL1:183:670 at VeDmSurfaceFragment.ve.dm.SurfaceFragment.delete URL1:196:8 at Object.ve.ce.LinearDeleteKeyDownHandler.static.execute URL1:529:452 at VeCeKeyDownHandlerFactory.ve.ce.KeyDownHandlerFactory.executeHandlersForKey URL1:512:566 at VeCeSurface.ve.ce.Surface.onDocumentKeyDown URL1:449:472 at VeEventSequencer.ve.EventSequencer.callListener URL1:24:768 URL1: https://fr.wikipedia.org/w/load.php?lang=fr&modules=ext.visualEditor.core&skin=vector&version=1ozeh