MediaWiki internal error.<br />
<br />
Original exception: [7ad791a3a8cbcc90a66fd9eb] 2024-12-28 08:03:43: Fatal exception of type &quot;Wikimedia\Rdbms\DBConnectionError&quot;<br />
<br />
Exception caught inside exception handler.<br />
<br />
Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.<br />

  <script>parent.window.postMessage('ixistenz.url:https://unterrichten.zum.de/wiki/19._Jahrhundert', '*'); </script> <div id='browserdiffcontainer' style='position: fixed; right: 10px; top: 10vh; min-width: 60px;  border: 1px solid white; background: rgb(251, 189, 0);; opacity: 0.9; font-family: helvetica, arial, sans serif;  font-size: 12px; z-index: 20001; padding-bottom: 20px;'><div onclick="toggle('browserdiffcontainerlist'); return false;" style='background: rgb(151, 89, 0);; color: white; '><strong>&nbsp; <span class='glyphicon glyphicon-minus'></span> NODES</strong></div><div id='browserdiffcontainerlist' style='padding-left: 10px; padding-right: 5px; max-height: 50vh; overflow: auto; '><div><a href='#diffid123' style='color: white;' onClick="parent.window.postMessage('ixistenz.opendiff:123', '*');; return false;" style='text-decoration: none; '>INTERN </a> <a style='color: white;' href='#diffid123'><sup>1</sup></a></div></div></div>
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} </script>