Couldn't parse JSON : No JSON object could be decoded
Traceback (most recent call last):
  File "/usr/bin/ceph", line 948, in <module>
    retval = main()
  File "/usr/bin/ceph", line 875, in main
    sigdict = parse_json_funcsigs(outbuf, 'cli')
  File "/usr/lib/python2.7/site-packages/ceph_argparse.py", line 744, in parse_json_funcsigs
    raise e
ValueError: No JSON object could be decoded