2030 errors were thrown on mobile French Wikipedia in the last 12 hrs. This is extremely high - in fact is occurring more than any other error.
The banner looks like it was turned on at 4pm UTC yesterday.
{F32370380}
Debugging is tricky, but I strongly believe this relates to a new campaign on French Wikipedia. The error is likely preventing the banner from displaying.
This error possibly relates to:
https://meta.wikimedia.org/wiki/Special:CentralNoticeBanners/edit/B2021_1002_frFR_m_p1_lg_txt_swap
which uses localStorage without any kind of feature detection.
# Acceptance criteria
[x] The bug is fixed
[] An update is made to the banner loader such that it's easier to identify errors coming from banners. I would recommend a named function e.g. insertCentralNoticeBannerHTML(); so that this appears in the stacktrace
```
at HTMLDocument.<anonymous> <anonymous>:1863:41
at mightThrow URL1:161:149
at process URL1:161:808
URL1: https://fr.m.wikipedia.org/w/load.php?lang=fr&modules=ext.centralNotice.bannerHistoryLogger%2CchoiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2ClargeBannerLimit%2ClegacySupport%2CstartUp%7Cext.centralauth.centralautologin%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.quicksurveys.init%2Clib%7Cext.relatedArticles.readMore.bootstrap%2Cgateway%7Cjquery%2Coojs%2Coojs-router%2Coojs-ui-core%2Coojs-ui-widgets%2Csite%7Cjquery.client%2Ccookie%2Cthrottle-debounce%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Ctemplate%2Cuser%2Cutil%2Cviewport%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.template.mustache%7Cmediawiki.ui.anchor%7Cmobile.init%2Cstartup%7Cmobile.messageBox.styles%7Cmobile.ooui.icons%7Cmobile.pagelist.styles%7Cmobile.pagesummary.styles%7Cmobile.placeholder.images%7Cmobile.startup.images%7Cmw.externalguidance.init%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui-widgets.icons%7Coojs-ui.styles.indicators%7Cskins.minerva.icons.images.scripts%7Cskins.minerva.icons.images.scripts.misc%7Cskins.minerva.icons.page.issues.default.color%7Cskins.minerva.icons.page.issues.medium.color%7Cskins.minerva.icons.page.issues.uncolored%7Cskins.minerva.options%2Cscripts%7Cuser.defaults&skin=minerva&version=1jnxh
`