It appears that Postgre support in MediaWiki is sketchy at best. Let's just move to MariaDB and make our lives easy.
The simplest path is to export existing work (we don't need History or User Pages), using the maintenance scripts located in /wiki/maintenance/, then import using the scripts there as well.
Let's ensure that we get all Files/Media/Images in the move.
Summary
It appears that Postgre support in MediaWiki is sketchy at best. Let's just move to MariaDB and make our lives easy.
The simplest path is to export existing work (we don't need History or User Pages), using the maintenance scripts located in
/wiki/maintenance/
, then import using the scripts there as well.Let's ensure that we get all Files/Media/Images in the move.
References
https://www.mediawiki.org/wiki/Manual:Moving_a_wiki https://www.mediawiki.org/wiki/Help:Export https://meta.wikimedia.org/wiki/Help:Import