MediaWiki internal error.

Original exception: [856b54de72bf67ccc286b5ce] 2024-03-28 11:09:40: Fatal exception of type "Wikimedia\Rdbms\DBQueryError"

Exception caught inside exception handler.

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