Steps to replicate the issue (include links if applicable):
- Visit https://www.mediawiki.org/wiki/Special:Notifications
- Open JavaScript console
What happens?:
jquery.js?12e87:3793 Uncaught TypeError: Cannot convert undefined or null to object at Function.assign (<anonymous>) at new MwEchoUiReadStateButtonSelectWidget (mw.echo.ui.ReadStateButtonSelectWidget.js?7ec51:13:67) at new MwEchoUiNotificationsInboxWidget (mw.echo.ui.NotificationsInboxWidget.js?a5fb2:74:32) at HTMLDocument.<anonymous> (ext.echo.special.js?40764:35:32) at mightThrow (jquery.js?12e87:3489:29) at process (jquery.js?12e87:3557:12)
What should have happened instead?:
No error. Notifications should load.
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):