I havent set up any hooks and when i try to assign logical networks to an already existing interface on the host ,it gives me this error

Hook error: Hook Error: ('Traceback (most recent call last):\n File "/usr/libexec/vdsm/hooks/before_network_setup/50_fcoe", line 18, in <module>\n from vdsm.netconfpersistence import RunningConfig\nImportError: No module named netconfpersistence\n',)