Fatal error: Uncaught Error: Interface "Doctrine\Common\Collections\ReadableCollection" not found in C:\Apache24\htdocs\cms_upgrade\vendor\doctrine\collections\lib\Doctrine\Common\Collections\Collection.php:30 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\doctrine\collections\lib\Doctrine\Common\Collections\Collection.php on line 30