Fatal error: Uncaught Error: Class "MongoDB\Client" not found in /home/www/aes-demo/api-8.0.0#316/src/Doctrine/MongoDB/MongoClient.php:12 Stack trace: #0 {main} thrown in /home/www/aes-demo/api-8.0.0#316/src/Doctrine/MongoDB/MongoClient.php on line 12