KeyError: 'user_identity'

Using all default setting for setting up devstack. Once devstack is done, g-reg and g-api console will show same error like this.

KeyError: 'user_identity'

18c2599c92e1db002 with project_id : a068a8a689554202999265989f44f448 and roles: admin _build_user_headers /opt/stack/py
thon-keystoneclient/keystoneclient/middleware/auth_token.py:951
Traceback (most recent call last):
  File "/usr/lib/python2.7/logging/__init__.py", line 851, in emit
    msg = self.format(record)
  File "/opt/stack/glance/glance/openstack/common/log.py", line 684, in format
    return logging.StreamHandler.format(self, record)
  File "/usr/lib/python2.7/logging/__init__.py", line 724, in format
    return fmt.format(record)
  File "/opt/stack/glance/glance/openstack/common/log.py", line 648, in format
    return logging.Formatter.format(self, record)
  File "/usr/lib/python2.7/logging/__init__.py", line 467, in format
    s = self._fmt % record.__dict__
KeyError: 'user_identity'