Fail to start org.openbmc.managers.System.service

[Brad Chou]

Hi all,
I have s problem while start the org.openbmc.managers.System.service
The log says it fail to import obmc.inventory
Then every other service that required org.openbmc.managers.System.service just forced to be stoped.
Can anyone tell me what the obmc.inventory is ?
How can I fix this problem ?
Thanks.

May 25 11:20:58 system_manager.py[1015]: Traceback (most recent call last):
May 25 11:20:58 system_manager.py[1015]:   File "/usr/sbin/system_manager.py", line 15, in <module>
May 25 11:20:58 system_manager.py[1015]:     import obmc.inventory
May 25 11:20:58 system_manager.py[1015]: ImportError: No module named inventory
May 25 11:20:59 systemd[1]: org.openbmc.managers.System.service: Main process exited, code=exited, status=1/FAILURE
May 25 11:20:59 systemd[1]: Failed to start Phoshpor System Manager.
May 25 11:20:59 systemd[1]: org.openbmc.managers.System.service: Unit entered failed state.
May 25 11:20:59 systemd[1]: org.openbmc.managers.System.service: Failed with result 'exit-code'.