A cup of coffee for you!
Please take responsibility for your edit
You made this (https://www.mediawiki.org/w/index.php?title=Extension:Arrays&oldid=3561263) edit so please see that this is fixed since you're taking away resources that users can use to know the extension is in disrepair and fix it for themselves.
Some one made an attempt here (https://phabricator.wikimedia.org/T240111) and here (Topic:Vckr289fz0jyvhkw) is a permalink with more information. I've done what I can. You undid that so a page can look attractive, so you should see the problem through.
About "Project not found in Phabricator"
Thank you for your correction => https://www.mediawiki.org/w/index.php?title=Extension:AdvancedSearch&diff=3514800&oldid=3495859&diffmode=source Can you please leave a comment on https://phabricator.wikimedia.org/T237288 for them to close the task ?
... and have a look to https://www.mediawiki.org/wiki/Topic:Vbl1f0pa0wjwlo00 where the problem is similar but for file 'config'