Stack Trace

Symfony\Component\Debug\Exception\FatalThrowableError:
Type error: Argument 1 passed to Doctrine\Common\Collections\ArrayCollection::__construct() must be of the type array, object given, called in /home/seb/Projets/exercice1b/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php on line 633

  at vendor/doctrine/collections/lib/Doctrine/Common/Collections/ArrayCollection.php:53
  at Doctrine\Common\Collections\ArrayCollection->__construct(object(Orders))
     (vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php:633)
  at Doctrine\ORM\UnitOfWork->computeChangeSet(object(ClassMetadata), object(Products))
     (vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php:479)
  at Doctrine\ORM\UnitOfWork->computeScheduleInsertsChangeSets()
     (vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php:794)
  at Doctrine\ORM\UnitOfWork->computeChangeSets()
     (vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php:341)
  at Doctrine\ORM\UnitOfWork->commit(null)
     (vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php:358)
  at Doctrine\ORM\EntityManager->flush()
     (src/Controller/OrdersController.php:91)
  at App\Controller\OrdersController->addProducts(object(Request), object(Orders))
     (vendor/symfony/http-kernel/HttpKernel.php:149)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1)
     (vendor/symfony/http-kernel/HttpKernel.php:66)
  at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, true)
     (vendor/symfony/http-kernel/Kernel.php:190)
  at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
     (public/index.php:37)