i have updated my MediaWiki box (Ubuntu 18.04 with MediaWiki 1.35 & PHP 5 to Ubuntu 22.04 with MediaWiki 1.42 & PHP 8.1.2).
Everything seems to be fine first, but after a while i detected that "Special Pages" does not work any more.
There is the following error (german version) - can someone help me please with it?
Interner Fehler
[cdbf838bee0ee8981cfaa93f] /wiki/index.php?title=Spezial:Spezialseiten Wikimedia\Assert\ParameterAssertionException: Bad value for parameter $title: should not be empty unless namespace is main
Backtrace:
from /var/www/html/wiki/vendor/wikimedia/assert/src/Assert.php(72)
#0 /var/www/html/wiki/includes/title/TitleValue.php(215): Wikimedia\Assert\Assert::parameter()
#1 /var/www/html/wiki/includes/title/TitleValue.php(169): MediaWiki\Title\TitleValue::assertValidSpec()
#2 /var/www/html/wiki/includes/specialpage/SpecialPage.php(173): MediaWiki\Title\TitleValue->__construct()
#3 /var/www/html/wiki/includes/specialpage/SpecialPage.php(156): MediaWiki\SpecialPage\SpecialPage::getTitleValueFor()
#4 /var/www/html/wiki/includes/specialpage/SpecialPage.php(837): MediaWiki\SpecialPage\SpecialPage::getTitleFor()
#5 /var/www/html/wiki/includes/specials/SpecialSpecialPages.php(83): MediaWiki\SpecialPage\SpecialPage->getPageTitle()
#6 /var/www/html/wiki/includes/specials/SpecialSpecialPages.php(53): MediaWiki\Specials\SpecialSpecialPages->getPageGroups()
#7 /var/www/html/wiki/includes/specialpage/SpecialPage.php(719): MediaWiki\Specials\SpecialSpecialPages->execute()
#8 /var/www/html/wiki/includes/specialpage/SpecialPageFactory.php(1669): MediaWiki\SpecialPage\SpecialPage->run()
#9 /var/www/html/wiki/includes/actions/ActionEntryPoint.php(504): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#10 /var/www/html/wiki/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#11 /var/www/html/wiki/includes/MediaWikiEntryPoint.php(199): MediaWiki\Actions\ActionEntryPoint->execute()
#12 /var/www/html/wiki/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#13 {main}
Kind regards,
Jo