Issue Summary

When attempting to assign access to a repository/projects, searching for a user in the search box results in an error message: "Internal Server Error."

This prevents admins from adding users to repositories, projects on the workspace.

Steps to Reproduce

• Navigate to the Bitbucket repository settings/Project Settings
• Click on Repository Permissions/Project Permissions >> Add users or groups
• In the search box, enter the name of the user you wish to grant access to.
• Observe that the search fails, and an error message "Internal Server Error" is displayed.

Expected Results

• Users should be searchable when adding repository permissions.
• The search box should successfully display the user.
• Users should be able to assign repository access without errors.

Workaround

• The current workaround is to remove and then re-add permissions for the users whose permissions are out of sync.
• If the above step doesn't work, another admin needs to remove and re-add the admin's account(admin attempting to grant permissions to user). After this, the admin can try adding the user again.