Symfony2 misconfigured entity - symfony

Question

I am getting two warnings about misconfigured entities in my Symfony 2 project. It runs fine in the development environment, but the production environment will not start and I suspect these misconfigured entities might be the reason.
It is the same error on both entities so I am only including one of them as an example.
BizTV\MediaManagementBundle\Entity\QrImage:
The field BizTV\MediaManagementBundle\Entity\QrImage#visits is on the inverse side of a bi-directional relationship, but the specified mappedBy association on the target-entity BizTV\MediaManagementBundle\Entity\QrVisit#QrImage does not contain the required 'inversedBy="visits"' attribute.
QrVisit entity:
class QrVisit
{
...
/**
* #var object BizTV\MediaManagementBundle\Entity\QrImage
*
* #ORM\ManyToOne(targetEntity="BizTV\MediaManagementBundle\Entity\QrImage")
* #ORM\JoinColumn(name="QrImage", referencedColumnName="id")
*/
protected $QrImage;
QrImage entity:
class QrImage
{
...
/**
* #ORM\OneToMany(targetEntity="BizTV\MediaManagementBundle\Entity\QrVisit", mappedBy="QrImage")
*/
private $visits;
I changed QrImage to include the inversedBy as below, but I probably did it wrong because I still get an error message, although a new one.
/**
* #ORM\OneToMany(targetEntity="BizTV\MediaManagementBundle\Entity\QrVisit", mappedBy="QrImage", inversedBy="visits")
*/
private $visits;
But this generates the error:
[Creation Error] The annotation #ORM\JoinColumn declared on property BizTV\UserBundle\Entity\UserGroup::$company does not have a property named "inversedBy". Available properties: name, referencedColumnName, unique, nullable, onDelete, columnDefinition, fieldName

Answer 1

If you want to establish a bi-directional ManyToOne / OneToMany relationship you'll have to put the mappedBy attribute on the OneToMany side like:
#ORM\OneToMany(targetEntity="BizTV\MediaManagementBundle\Entity\QrVisit", mappedBy="QrImage")
and the inversedBy on the ManyToOne side like:
#ORM\ManyToOne(targetEntity="BizTV\MediaManagementBundle\Entity\QrImage", inversedBy="visits")
that's all you need here. For your reference please check Doctrine doc
The error that you're getting refers to a different entity (UserGroup) but you can check them in the same fashion.