salt-traceback

[INFO    ] AES payload received with command _pillar
Process MWorker-5:
Traceback (most recent call last):
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/usr/lib/pymodules/python2.7/salt/master.py", line 515, in run
    self.__bind()
  File "/usr/lib/pymodules/python2.7/salt/master.py", line 453, in __bind
    ret = self.serial.dumps(self._handle_payload(payload))
  File "/usr/lib/pymodules/python2.7/salt/master.py", line 476, in _handle_payload
    'clear': self._handle_clear}[key](load)
  File "/usr/lib/pymodules/python2.7/salt/master.py", line 503, in _handle_aes
    return self.aes_funcs.run_func(data['cmd'], data)
  File "/usr/lib/pymodules/python2.7/salt/master.py", line 1065, in run_func
    ret = getattr(self, func)(load)
  File "/usr/lib/pymodules/python2.7/salt/master.py", line 737, in _pillar
    load['env'])
  File "/usr/lib/pymodules/python2.7/salt/pillar/__init__.py", line 73, in __init__
    if opts['file_client'] == 'local':
KeyError: 'file_client'