This is a duplicate of https://bugs.launchpad.net/keystone/+bug/1878438, see also my comments there - we should fix the 500 response but using an application credential to get a new token should not be valid.
This is a duplicate of https:/ /bugs.launchpad .net/keystone/ +bug/1878438, see also my comments there - we should fix the 500 response but using an application credential to get a new token should not be valid.