Thread:Extension talk:Vector/collapsiblenav does not work on the main page (1.20.2)

Hello, I just upgraded a site from 1.16 to 1.20.2. The collapsible nav does not work on the front (main) page, but on all other pages. I get the following errors in Chrome:

Exception thrown by jquery.mw-jump: Object # has no method 'delegate' load.php:151 TypeError load.php:151 Exception thrown by ext.vector.collapsibleNav: Cannot call method 'test' of undefined load.php:151 TypeError load.php:151 Exception thrown by mediawiki.searchSuggest: Object # has no method 'first' load.php:151 TypeError