MediaWiki internal error.

Original exception: [b21fb89767c10f09dc0ea266] 2024-03-29 08:25:37: 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.