Permissions problem

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Hi,
i have a problem when loging in to the site, the error shows up saying
..8.0.3/concrete/src/Permission/Access/Entity/FileUploaderEntity.php:34 Call to undefined method Concrete\Core\Tree\Node\Type\FileFolder::getUserID()

And this is only for one user, there are few more users but non of them is having that error.
And that happens in the class Concrete\Core\Permission\Access\Entity\FileUploaderEntity in the validate method.
Is this some kind of bug?