Exception in thread Thread-2:
Traceback (most recent call last):
File "/usr/lib64/python3.6/threading.py", line 937, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/site-packages/ceph_iscsi_config/device_status.py", line 162, in run
stats_dict = dev_status.get_status_dict()
AttributeError: 'NoneType' object has no attribute 'get_status_dict'