Fatal error: Uncaught RuntimeException: RedisConnectionPool requires a Redis client library. See https://www.mediawiki.org/wiki/Redis#Setup in /var/www/html/includes/libs/redis/RedisConnectionPool.php:84 Stack trace: #0 /var/www/html/includes/libs/redis/RedisConnectionPool.php(156): RedisConnectionPool->__construct(Array, 'd94188a7d1a2d44...') #1 /var/www/html/includes/libs/objectcache/RedisBagOStuff.php(79): RedisConnectionPool::singleton(Array) #2 /var/www/html/includes/objectcache/ObjectCache.php(210): RedisBagOStuff->__construct(Array) #3 /var/www/html/includes/objectcache/ObjectCache.php(105): ObjectCache::newFromParams(Array) #4 /var/www/html/includes/objectcache/ObjectCache.php(77): ObjectCache::newFromId('redis') #5 /var/www/html/includes/objectcache/ObjectCache.php(289): ObjectCache::getInstance('redis') #6 /var/www/html/includes/ServiceWiring.php(575): ObjectCache::getLocalClusterInstance() #7 /var/www/html/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer::{closure}(Object(MediaWiki\MediaWikiServices)) #8 /var/www/html/vendor/wikimedia/services/src/ServiceContainer.php(411): Wikimedia\Services\ServiceContainer->createService('DBLoadBalancerF...') #9 /var/www/html/includes/MediaWikiServices.php(301): Wikimedia\Services\ServiceContainer->getService('DBLoadBalancerF...') #10 /var/www/html/includes/MediaWikiServices.php(959): MediaWiki\MediaWikiServices->getService('DBLoadBalancerF...') #11 /var/www/html/includes/ServiceWiring.php(545): MediaWiki\MediaWikiServices->getDBLoadBalancerFactoryConfigBuilder() #12 /var/www/html/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer::{closure}(Object(MediaWiki\MediaWikiServices)) #13 /var/www/html/vendor/wikimedia/services/src/ServiceContainer.php(411): Wikimedia\Services\ServiceContainer->createService('DBLoadBalancerF...') #14 /var/www/html/includes/MediaWikiServices.php(301): Wikimedia\Services\ServiceContainer->getService('DBLoadBalancerF...') #15 /var/www/html/includes/MediaWikiServices.php(951): MediaWiki\MediaWikiServices->getService('DBLoadBalancerF...') #16 /var/www/html/includes/exception/MWExceptionHandler.php(165): MediaWiki\MediaWikiServices->getDBLoadBalancerFactory() #17 /var/www/html/includes/exception/MWExceptionHandler.php(191): MWExceptionHandler::rollbackPrimaryChanges() #18 /var/www/html/includes/exception/MWExceptionHandler.php(247): MWExceptionHandler::rollbackPrimaryChangesAndLog(Object(RuntimeException), 'mwe_handler') #19 /var/www/html/includes/exception/MWExceptionHandler.php(216): MWExceptionHandler::handleException(Object(RuntimeException), 'mwe_handler') #20 [internal function]: MWExceptionHandler::handleUncaughtException(Object(RuntimeException)) #21 {main} thrown in /var/www/html/includes/libs/redis/RedisConnectionPool.php on line 84