Interner Fehler

[78780160dacc0ffb045cafb8] /wiki/index.php?title=LED_Umbau&action=edit Error: Call to undefined method ObjectCache::getMainWANInstance()

Backtrace:

from /var/www/html/rf1000/wiki/extensions/TitleBlacklist/TitleBlacklist.list.php(42)
#0 /var/www/html/rf1000/wiki/extensions/TitleBlacklist/TitleBlacklist.list.php(233): TitleBlacklist->load()
#1 /var/www/html/rf1000/wiki/extensions/TitleBlacklist/TitleBlacklist.list.php(186): TitleBlacklist->getBlacklist()
#2 /var/www/html/rf1000/wiki/extensions/TitleBlacklist/TitleBlacklist.list.php(154): TitleBlacklist->isBlacklisted()
#3 /var/www/html/rf1000/wiki/extensions/TitleBlacklist/TitleBlacklist.hooks.php(33): TitleBlacklist->userCannot()
#4 /var/www/html/rf1000/wiki/includes/HookContainer/HookContainer.php(161): TitleBlacklistHooks::userCan()
#5 /var/www/html/rf1000/wiki/includes/HookContainer/HookRunner.php(1994): MediaWiki\HookContainer\HookContainer->run()
#6 /var/www/html/rf1000/wiki/includes/Permissions/PermissionManager.php(614): MediaWiki\HookContainer\HookRunner->onGetUserPermissionsErrorsExpensive()
#7 /var/www/html/rf1000/wiki/includes/Permissions/PermissionManager.php(561): MediaWiki\Permissions\PermissionManager->checkPermissionHooks()
#8 /var/www/html/rf1000/wiki/includes/Permissions/PermissionManager.php(375): MediaWiki\Permissions\PermissionManager->getPermissionErrorsInternal()
#9 /var/www/html/rf1000/wiki/includes/editpage/EditPage.php(924): MediaWiki\Permissions\PermissionManager->getPermissionErrors()
#10 /var/www/html/rf1000/wiki/includes/editpage/EditPage.php(654): MediaWiki\EditPage\EditPage->getEditPermissionErrors()
#11 /var/www/html/rf1000/wiki/includes/actions/EditAction.php(66): MediaWiki\EditPage\EditPage->edit()
#12 /var/www/html/rf1000/wiki/includes/MediaWiki.php(583): EditAction->show()
#13 /var/www/html/rf1000/wiki/includes/MediaWiki.php(363): MediaWiki->performAction()
#14 /var/www/html/rf1000/wiki/includes/MediaWiki.php(960): MediaWiki->performRequest()
#15 /var/www/html/rf1000/wiki/includes/MediaWiki.php(613): MediaWiki->main()
#16 /var/www/html/rf1000/wiki/index.php(50): MediaWiki->run()
#17 /var/www/html/rf1000/wiki/index.php(46): wfIndexMain()
#18 {main}