Try with mongo odm 2.0 beta

Author: arendjantetteroo

composer.json

@@ -18,7 +18,7 @@
  "symfony/console": "^2.7 || ^3.3 || ^4.0",
  "symfony/config": "^2.7 || ^3.3 || ^4.0",
  "doesntmattr/mongodb-migrations": "^2.0",
- "doctrine/mongodb-odm": "^1.0"
+ "doctrine/mongodb-odm": "^1.0|^2@dev"
  },
  "require-dev": {
  "friendsofphp/php-cs-fixer": "^2.0",