==== Error ====
* mwversion: ``
* reqId: ` 0dc32a17-ed10-434b-893e-4d3839a419e3`
* sample error: `https://logstash.wikimedia.org/app/discover#/doc/logstash-*/logstash-2021.07.16?id=nj7hsHoBStjVNP_P8Oh1`
```name=normalized_message
TypeError: this.translationView.header is undefined
```
```name=exception.trace,lines=10
at ve.init.mw.CXTarget.prototype.onDialogOpening https://cs.wikipedia.org/w/load.php?lang=cs&modules=diffMatchPatch%2Cdompurify%2Cjquery%2Coojs%2Coojs-ui%2Coojs-ui-core%2Coojs-ui-toolbars%2Coojs-ui-widgets%2Coojs-ui-windows%2Cpapaparse%2Crangefix%2Csite%2Cspark-md5%2CtreeDiffer%2Cunicodejs%7Cext.centralNotice.geoIP%7Cext.centralauth.ForeignApi%7Cext.centralauth.centralautologin.clearcookie%7Cext.cx.eventlogging.campaigns%7Cext.cx.model%2Cutil%7Cext.cx.widgets.spinner%7Cext.cx.wikibase.link%7Cext.echo.api%2Cinit%7Cext.eventLogging%2CnavigationTiming%2CwikimediaEvents%7Cext.uls.common%2Ccompactlinks%2Cinterface%2Cpreferences%2Cwebfonts%7Cjquery.client%2Ccookie%2Ctablesorter%2CtextSelection%2Cui%7Cjquery.tablesorter.styles%7Cjquery.uls.data%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cdeflate%2Cexperiments%2CjqueryMsg%2Clanguage%2Cpulsatingdot%2Cstorage%2Cuser%2Cutil%2CvisibleTimeout%2Cwidgets%7Cmediawiki.ForeignApi.core%7Cmediawiki.action.view.redirectPage%7Cmediawiki.editfont.styles%7Cmediawiki.interface.helpers.styles%7Cmediawiki.language.months%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.skinning.content.parsoid%7Cmediawiki.ui.button%7Cmediawiki.widgets.styles%7Cmw.cx.MachineTranslation%2CMwApiRequestManager%2CSiteMapper%2Cdm%2Cinit%2Cui%2Cutil%7Cmw.cx.dm.PageTitleModel%2CTranslation%2CTranslationIssue%2CWikiPage%7Cmw.cx.init.Translation%7Cmw.cx.tools.IssueTrackingTool%2CTranslationTool%2CTranslationToolFactory%7Cmw.cx.ui.Categories%2CCategoryMultiselectWidget%2CInfobar%2CMessageWidget%2CPageTitleWidget%2CTranslationToolWidget%2CTranslationView%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui-toolbars.icons%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Coojs-ui.styles.icons-accessibility%2Cicons-content%2Cicons-editing-advanced%2Cicons-editing-core%2Cicons-interactions%2Cindicators%7Cuser.defaults%7Cve.ce.CXLintableNode%7Cve.dm.CXLintableNode%7Cve.init.mw.CXTarget%7Cve.ui.CXDesktopContext%2CCXSurface&skin=contenttranslation&version=lqs63:1552:536
```
==== Impact ====
~100 in the last 12 hours
==== Notes ====
Logstash url: https://logstash.wikimedia.org/app/dashboards#/view/Reading-Web?_g=h@7689555&_a=h@8cd9665
urls:
https://cs.wikipedia.org/wiki/Special:ContentTranslation?title=Speci%C3%A1ln%C3%AD:P%C5%99eklad&page=Nedze&from=sk&to=cs&targettitle=Nedze
https://it.wikipedia.org/wiki/Special:ContentTranslation?title=Speciale:TraduzioneContenuti&page=Wilhelm+Berger&from=en&to=it&targettitle=Wilhelm+Berger