What's the URL of the page containing the problem?
What steps will reproduce the problem?
1. Create a new review
2. publish it
3. Try to add or remove users to the review
What is the expected output? What do you see instead?
The expected output is to add or remove reviewers.
Error:
Saving the draft has failed due to a server error: INTERNAL SERVER ERROR.
Please try again later. If this continues to happen, please report it to
your administrator
What operating system are you using? What browser?
Linux on the backend, Any browser
Please provide any additional information below.