MediaWiki internal error.

Original exception: [c921e0249368a4ff183d79d3] 2024-03-28 14:54:16: 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.