Fatal error: Uncaught CredisException: Lost connection to Redis server. in /var/www/magento2/vendor/colinmollenhour/credis/Client.php:1247 Stack trace: #0 /var/www/magento2/vendor/colinmollenhour/credis/Client.php(1006): Credis_Client->read_reply('select') #1 /var/www/magento2/vendor/colinmollenhour/credis/Client.php(637): Credis_Client->__call('select', Array) #2 /var/www/magento2/vendor/colinmollenhour/cache-backend-redis/Cm/Cache/Backend/Redis.php(382): Credis_Client->select(1) #3 /var/www/magento2/vendor/colinmollenhour/cache-backend-redis/Cm/Cache/Backend/Redis.php(243): Cm_Cache_Backend_Redis->_applyClientOptions(Object(Credis_Client)) #4 /var/www/magento2/vendor/magento/zendframework1/library/Zend/Cache.php(153): Cm_Cache_Backend_Redis->__construct(Array) #5 /var/www/magento2/vendor/magento/zendframework1/library/Zend/Cache.php(94): Zend_Cache::_makeBackend('Cm_Cache_Backen...', Array, true, true) #6 /var/www/magento2/lib/internal/Magento/Framework/App/Cache/Frontend/Factory.php(156): Zend_Cache::factory('Magento\\ in /var/www/magento2/vendor/colinmollenhour/credis/Client.php on line 1247