User Can't Delete Role if github repo was already deleted

Bug Report

SUMMARY

I’d like to delete this role, but get an error.

STEPS TO REPRODUCE

ansible-galaxy delete robertdebock ansible-role-iptables
ERROR! Galaxy user robertdebock does not have access to repo robertdebock/ansible-role-iptables

EXPECTED RESULTS

I’d like the role to be removed.

ACTUAL RESULTS

ansible-galaxy 2.6.3
  config file = /home/robertdb/Documents/ansible/mvps/ansible.cfg
  configured module search path = [u'/home/robertdb/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible-galaxy
  python version = 2.7.15 (default, May 16 2018, 17:50:09) [GCC 8.1.1 20180502 (Red Hat 8.1.1-1)]
Using /home/robertdb/Documents/ansible/ansible.cfg as config file
Opened /home/robertdb/.ansible_galaxy
https://galaxy.ansible.com/api/v1/removerole/?github_user=robertdebock&github_repo=ansible-role-iptables
ERROR! Galaxy user robertdebock does not have access to repo robertdebock/ansible-role-iptables

When I visit the API, I see the same error on a DELETE method:

HTTP 400 Bad Request
Allow: DELETE, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "detail": "Galaxy user robertdebock does not have access to repo robertdebock/ansible-role-iptables"
}

I have the feeling that I’m making a mistake, but am not sure what the mistake is.

[chouseknecht]

@robertdebock

Your tower role is deleted.

[chouseknecht]

@robertdebock

Deleted. The API failed to remove it because the repository on GitHub was already removed or missing.