Comment 1 for bug 1078497

'NoneType' object has no attribute 'get'
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/keystone/common/wsgi.py", line 204, in __call__
    result = method(context, **params)#012 File "/usr/lib/python2.7/dist-packages/keystone/identity/core.py", line 621, in remove_role_from_user
    self.token_api.revoke_tokens(context, user_id, tenant_id)
  File "/usr/lib/python2.7/dist-packages/keystone/token/core.py", line 48, in revoke_tokens
    for token_id in self.list_tokens(context, user_id, tenant_id):
  File "/usr/lib/python2.7/dist-packages/keystone/common/manager.py", line 47, in _wrapper
    return f(*args, **kw)#012 File "/usr/lib/python2.7/dist-packages/keystone/token/backends/sql.py", line 113, in list_tokens
    if token_ref_dict['tenant'].get('id') != tenant_id:
AttributeError: 'NoneType' object has no attribute 'get'

Tracback from keystone.