MediaWiki internal error.

Original exception: [Zfl5S@muZ4xmVt0cnQ1HWgAAAA4] 2024-03-19 11:38:51: Fatal exception of type "Wikimedia\Assert\PostconditionException"

Exception caught inside exception handler.

Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.