The VirtualBox VM was created with a user that doesn't match the current user running Vagrant. VirtualBox requires that the same user be used to manage the VM that was created. Please re-run Vagrant with that user. This is not a Vagrant issue.
The UID used to create the VM was: 504 Your UID is: 502
You used a different account to create this vagrant instance or you copied the instance over to another system.
Edit ./vagrant/machines/default/virtualbox/creator_uid Set 504 to 502