MediaWiki internal error.

Original exception: [f3c9f99e665049e528ee3499] 2024-03-29 11:45:47: 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.