Warning: Redis::connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/emoncms/index.php on line 39

Fatal error: Uncaught RedisException: php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/emoncms/index.php:39 Stack trace: #0 /var/www/emoncms/index.php(39): Redis->connect('redis', 6379) #1 {main} thrown in /var/www/emoncms/index.php on line 39