[2021-10-12 14:17:00,341: ERROR/ForkPoolWorker-1] Task access.tasks.grant_privilege[29d7421d-13ed-4641-bd06-609522635d49] raised unexpected: SlackError({'ok': False, 'error': 'token_revoked'}) Traceback (most recent call last): File "/usr/local/lib/python3.9/site-packages/celery/app/trace.py", line 405, in trace_task R = retval = fun(*args, **kwargs) File "/usr/local/lib/python3.9/site-packages/celery/app/trace.py", line 697, in __protected_call__ return self.run(*args, **kwargs) File "/usr/src/app/access/tasks.py", line 13, in grant_privilege privilege._grant(person) File "/usr/src/app/access/models/privilege.py", line 61, in _grant grant_function(self, person) File "/usr/src/app/access/privileges.py", line 13, in invite_to_slack privilege.slack_access.grant(person) File "/usr/src/app/access/models/slack_access.py", line 62, in grant raise SlackError(result) access.models.slack_access.SlackError: {'ok': False, 'error': 'token_revoked'}