Fatal error: Uncaught RuntimeException: RedisConnectionPool requires a Redis client library. See https://www.mediawiki.org/wiki/Redis#Setup in /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/libs/redis/RedisConnectionPool.php:84 Stack trace: #0 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/libs/redis/RedisConnectionPool.php(156): RedisConnectionPool->__construct() #1 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/libs/objectcache/RedisBagOStuff.php(79): RedisConnectionPool::singleton() #2 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/objectcache/ObjectCache.php(210): RedisBagOStuff->__construct() #3 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/objectcache/ObjectCache.php(105): ObjectCache::newFromParams() #4 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/objectcache/ObjectCache.php(77): ObjectCache::newFromId() #5 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/objectcache/ObjectCache.php(289): ObjectCache::getInstance() #6 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/ServiceWiring.php(575): ObjectCache::getLocalClusterInstance() #7 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/vendor/wikimedia/services/src/ServiceContainer.php(445): Wikimedia\Services\ServiceContainer::{closure}() #8 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/vendor/wikimedia/services/src/ServiceContainer.php(411): Wikimedia\Services\ServiceContainer->createService() #9 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/MediaWikiServices.php(301): Wikimedia\Services\ServiceContainer->getService() #10 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/MediaWikiServices.php(959): MediaWiki\MediaWikiServices->getService() #11 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/ServiceWiring.php(545): MediaWiki\MediaWikiServices->getDBLoadBalancerFactoryConfigBuilder() #12 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/vendor/wikimedia/services/src/ServiceContainer.php(445): Wikimedia\Services\ServiceContainer::{closure}() #13 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/vendor/wikimedia/services/src/ServiceContainer.php(411): Wikimedia\Services\ServiceContainer->createService() #14 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/MediaWikiServices.php(301): Wikimedia\Services\ServiceContainer->getService() #15 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/MediaWikiServices.php(951): MediaWiki\MediaWikiServices->getService() #16 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/exception/MWExceptionHandler.php(165): MediaWiki\MediaWikiServices->getDBLoadBalancerFactory() #17 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/exception/MWExceptionHandler.php(191): MWExceptionHandler::rollbackPrimaryChanges() #18 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/exception/MWExceptionHandler.php(247): MWExceptionHandler::rollbackPrimaryChangesAndLog() #19 /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/exception/MWExceptionHandler.php(216): MWExceptionHandler::handleException() #20 [internal function]: MWExceptionHandler::handleUncaughtException() #21 {main} thrown in /var/webs/www.herzbube.ch/public_html/wiki.herzbube.ch/includes/libs/redis/RedisConnectionPool.php on line 84