Fatal error: Uncaught CredisException: Connection to Redis 127.0.0.1:6379 failed after 2 failures.Last Error : (1) Connection refused in /data/website/meideng/vendor/colinmollenhour/credis/Client.php:475 Stack trace: #0 /data/website/meideng/vendor/colinmollenhour/credis/Client.php(471): Credis_Client->connect() #1 /data/website/meideng/vendor/colinmollenhour/credis/Client.php(784): Credis_Client->connect() #2 /data/website/meideng/vendor/colinmollenhour/credis/Client.php(637): Credis_Client->__call('select', Array) #3 /data/website/meideng/vendor/colinmollenhour/cache-backend-redis/Cm/Cache/Backend/Redis.php(393): Credis_Client->select(1) #4 /data/website/meideng/vendor/colinmollenhour/cache-backend-redis/Cm/Cache/Backend/Redis.php(250): Cm_Cache_Backend_Redis->_applyClientOptions(Object(Credis_Client)) #5 /data/website/meideng/vendor/magento/zendframework1/library/Zend/Cache.php(153): Cm_Cache_Backend_Redis->__construct(Array) #6 /data/website/meideng/vendor/magento/zendframework1/library/Zend/Cache.php(94): Zend_Cache: in /data/website/meideng/vendor/colinmollenhour/credis/Client.php on line 475