Documentation on "Remove a custom role from a group member" is incorrect
The documentation on how to "Remove a custom role from a group member" https://docs.gitlab.com/ee/user/permissions.html#remove-a-custom-role-from-a-group-member is incorrect.
That states that you need to provide "member_role_id": ""
as part of the JSON payload. However doing so gave me the following error: An error has occurred and reported in the system's low-level error handler.
By trial and error, I discovered that instead providing "member_role_id": null
does have the desired result, so I believe the documentation should be changed to show that.