Two errors seem to be originating from one of the Growth experiments
https://logstash.wikimedia.org/app/dashboards#/doc/logstash-*/logstash-2021.03.09?id=qrzzFXgBfVMx58vqnGGj
at parse <anonymous>:603:937 at Function.Title.js.Title.newFromText <anonymous>:605:847 at helpPanelProcessDialog.HelpPanelProcessDialog.configureAskScreen <anonymous>:36:46 at new helpPanelProcessDialog <anonymous>:33:289 at HTMLDocument.<anonymous> <anonymous>:6:42 at mightThrow URL1:49:149 at process URL1:49:808 URL1: https://da.wikipedia.org/w/load.php?lang=da&modules=jquery%2Coojs-ui-core%2Coojs-ui-widgets%7Cjquery.ui&skin=monobook&version=1ss37
at parse URL1:765:925 at Title.js/Title.newFromText URL1:767:852 at help/ext.growthExperiments.HelpPanelProcessDialog.js/</HelpPanelProcessDialog.prototype.configureAskScreen URL1:146:46 at helpPanelProcessDialog URL1:143:289 at helppanel/ext.growthExperiments.HelpPanel.cta.js/</< URL1:191:42 at mightThrow URL1:289:149 at resolve/</process< URL1:289:808 URL1: https://da.wikipedia.org/w/load.php?lang=da&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.ForeignApi%7Cext.centralauth.centralautologin.clearcookie%7Cext.cx.entrypoints.contributionsmenu%7Cext.cx.eventlogging.campaigns%7Cext.cx.widgets.callout%7Cext.dismissableSiteNotice%2CeventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.echo.api%2Cinit%7Cext.growthExperiments.Help%2CHelpPanel%2CSuggestedEditSession%7Cext.growthExperiments.Homepage.icons%7Cext.uls.common%2Ccompactlinks%2Cinterface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Coojs-router%2Coojs-ui-core%2Coojs-ui-widgets%2Coojs-ui-windows%2Csite%7Cjquery.client%2Ccookie%2Cspinner%2CtextSelection%7Cjquery.spinner.styles%7Cjquery.uls.data%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cpulsatingdot%2Cstorage%2Cuser%2Cutil%7Cmediawiki.ForeignApi.core%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.ui.button%2Cicon%7Cmmv.bootstrap%2Chead%7Cmmv.bootstrap.autostart%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Coojs-ui.styles.icons-editing-advanced%2Cicons-editing-citation%2Cicons-editing-core%2Cicons-interactions%2Cicons-movement%2Cicons-user%7Cskins.monobook.mobile%7Cuser.defaults%7Cwikibase.client.linkitem.init&skin=monobook&version=mlrpr