There were about 29 instances of this bug in the last 12 hours from different IPs in the production logs. Not sure what impact this has on things using generateRandomSessionId
```
at .generateRandomSessionId URL1:730:1235
at .getPageviewToken URL1:730:1624
at .files["core.js"]/</core.eventInSample URL1:480:200
at URL1:475:837
at resolve/</mightThrow URL1:53:141
at resolve/</process< URL1:53:808
URL1: https://fr.wikipedia.org/w/load.php?lang=fr&modules=Spinner%2Cjquery%2Coojs%2Coojs-router%2Coojs-ui-core%2Coojs-ui-widgets%2Csite%7Cext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.cite.ux-enhancements%7Cext.cx.eventlogging.campaigns%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CwikimediaEvents%7Cext.growthExperiments.SuggestedEditSession%7Cext.quicksurveys.init%2Clib%7Cext.tmh.OgvJsSupport%7Cext.uls.common%2Ccompactlinks%2Cinit%2Cinterface%2Cpreferences%2Cwebfonts%7Cjquery.client%2Ccookie%2CembedPlayer%2CloadingSpinner%2CmwEmbedUtil%2CtextSelection%2CtriggerQueueCallback%7Cjquery.uls.data%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Ctoc%2Cuser%2Cutil%2Cviewport%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.ui.button%7Cmmv.bootstrap%2Chead%7Cmmv.bootstrap.autostart%7Cmw.EmbedPlayer.loader%7Cmw.MediaWikiPlayer.loader%7Cmw.MwEmbedSupport%2CPopUpMediaTransform%7Cmw.MwEmbedSupport.style%7Cmw.PopUpMediaTransform.styles%7Cmw.TMHGalleryHook.js%7Cmw.TimedText.loader%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui-widgets.icons%7Coojs-ui.styles.indicators%7Cskins.vector.js%7Cuser.defaults&skin=vector&version=1jh2e
```