MediaWiki internal error.

Original exception: exception 'ErrorPageError' with message 'Der Titel der angeforderten Seite ist ungültig, leer oder ein ungültiger Sprachlink von einem anderen Wiki.' in /srv/www/vorratsdatenspeicherung-wiki/includes/Wiki.php:152
Stack trace:
#0 /srv/www/vorratsdatenspeicherung-wiki/includes/Wiki.php(45): MediaWiki->initializeSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#1 /srv/www/vorratsdatenspeicherung-wiki/index.php(89): MediaWiki->initialize(Object(Title), Object(OutputPage), Object(User), Object(WebRequest))
#2 {main}

Exception caught inside exception handler: exception 'DBQueryError' with message 'A database error has occurred
Query: DELETE FROM `objectcache` WHERE keyname='wiki:anonnotice'
Function: MediaWikiBagOStuff::_doquery
Error: 1213 Deadlock found when trying to get lock; try restarting transaction (10.113.33.130)
' in /srv/www/vorratsdatenspeicherung-wiki/includes/Database.php:824
Stack trace:
#0 /srv/www/vorratsdatenspeicherung-wiki/includes/Database.php(779): Database->reportQueryError('Deadlock found ...', 1213, 'DELETE FROM `ob...', 'MediaWikiBagOSt...', false)
#1 /srv/www/vorratsdatenspeicherung-wiki/includes/BagOStuff.php(405): Database->query('DELETE FROM `ob...', 'MediaWikiBagOSt...')
#2 /srv/www/vorratsdatenspeicherung-wiki/includes/BagOStuff.php(300): MediaWikiBagOStuff->_doquery('DELETE FROM `ob...')
#3 /srv/www/vorratsdatenspeicherung-wiki/includes/BagOStuff.php(282): SqlBagOStuff->_query('DELETE FROM $0 ...', 'wiki:anonnotice')
#4 /srv/www/vorratsdatenspeicherung-wiki/includes/BagOStuff.php(245): SqlBagOStuff->delete('wiki:anonnotice')
#5 /srv/www/vorratsdatenspeicherung-wiki/includes/GlobalFunctions.php(1558): SqlBagOStuff->get('wiki:anonnotice')
#6 /srv/www/vorratsdatenspeicherung-wiki/includes/GlobalFunctions.php(1616): wfGetCachedNotice('anonnotice')
#7 /srv/www/vorratsdatenspeicherung-wiki/includes/SkinTemplate.php(405): wfGetSiteNotice()
#8 /srv/www/vorratsdatenspeicherung-wiki/includes/OutputPage.php(696): SkinTemplate->outputPage(Object(OutputPage))
#9 /srv/www/vorratsdatenspeicherung-wiki/includes/Exception.php(174): OutputPage->output()
#10 /srv/www/vorratsdatenspeicherung-wiki/includes/Exception.php(191): ErrorPageError->report()
#11 /srv/www/vorratsdatenspeicherung-wiki/includes/Exception.php(225): wfReportException(Object(ErrorPageError))
#12 [internal function]: wfExceptionHandler(Object(ErrorPageError))
#13 {main}