I have not seen this error before. This would be a good one to send to our support team at firstname.lastname@example.org.
If possible send the following information along with the ticket to get the most expedited response:
1. Screenshot of error message.
3. Any additional information you can provide.
I found the solution. If the Project does not have user permissions rights or we do not assign the permissions to a user/group I got the error. Once I assigned the project with user grouper and right permissions it got resolved.