Warning: session_start(): Error communicating with Redis server in /var/www/html/app/Kernel/Core.php on line 12

Fatal error: Uncaught RedisException: LOADING Redis is loading the dataset in memory in /var/www/html/app/Kernel/Core.php:12 Stack trace: #0 /var/www/html/app/Kernel/Core.php(12): session_start() #1 /var/www/html/public/index.php(82): App\Kernel\Core->__construct() #2 {main} thrown in /var/www/html/app/Kernel/Core.php on line 12