Fatal error: Uncaught MongoDB\Driver\Exception\ConnectionTimeoutException: No suitable servers found (`serverSelectionTryOnce` set): [connection refused calling ismaster on 'mongo:27017'] in /var/www/html/index.php:133 Stack trace: #0 /var/www/html/index.php(133): MongoDB\Driver\Manager->executeCommand('1draw', Object(MongoDB\Driver\Command)) #1 {main} thrown in /var/www/html/index.php on line 133