get bad error when messing with roles

[Planet-math]

Describe the bug :boom: if you delete the role and mess with the role number you get a bad error

To Reproduce :dizzy: Steps to reproduce the behavior:

1. Go to 'remove a role'
2. change the last number to >3
3. See error

Expected behavior :exclamation: id get an error message and get kicked

Screenshots :sunrise_over_mountains: If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information): :iphone: :computer:

• OS: windos 10
• Browser Chrome

Additional context :space_invader: Add any other context about the problem here.