We have email alerts setup for high volumes of JS errors and this appears to be triggered by a banner. While these alerts are triggering we cannot identify significant problems during train roll out and get regular email pings until the address has been fixed. For this reason, please identify and disable this banner until the issue has been fixed!
The stack trace is:
```
at https://en.wikipedia.org/wiki/Nitrogen line 2 > injectedScript:36:38
at DOMEval https://en.wikipedia.org/w/load.php?lang=en&modules=jquery&skin=vector-2022&version=r2z40:2:350
at domManip https://en.wikipedia.org/w/load.php?lang=en&modules=jquery&skin=vector-2022&version=r2z40:76:646
at prepend https://en.wikipedia.org/w/load.php?lang=en&modules=jquery&skin=vector-2022&version=r2z40:78:882
at injectBannerHTML https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.display&skin=vector-2022&version=1mikj:4:18
at reallyInsertBanner https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.display&skin=vector-2022&version=1mikj:8:481
at insertBanner/< https://en.wikipedia.org/w/load.php?lang=en&modules=ext.centralNotice.display&skin=vector-2022&version=1mikj:10:508
at mightThrow https://en.wikipedia.org/w/load.php?lang=en&modules=jquery&skin=vector-2022&version=r2z40:45:648
at Deferred/then/resolve/</process< https://en.wikipedia.org/w/load.php?lang=en&modules=jquery&skin=vector-2022&version=r2z40:46:309
```
and a search of meta seems to point to https://meta.wikimedia.org/wiki/MediaWiki:Centralnotice-template-Wikicurious_beat_en which was last edited by @Jeremyb
The volume is 320k over the last 24hrs https://logstash.wikimedia.org/goto/d520497b90e57c5e8411f4f646f5f9b4 and worryingly one single client has triggered 64k of those errors.
**Steps to replicate the issue** (include links if applicable):
(Unknown)
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**What happens?**:
**What should have happened instead?**:
**Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia):
**Other information** (browser name/version, screenshots, etc.):