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