FreezerConfig object has no attribute nova_network_id

[Saad Zaher]

while restoring nova instance backup I got the following error in which freezer is looking for nova_network_id parameter which tends to be doesn't exist.

2017-02-14 15:42:47.780 31455 INFO freezer.job [-] Validating args for the restore job.
2017-02-14 15:42:47.780 31455 INFO freezer.main [-] Job execution Started at: 2017-02-14 15:42:47
2017-02-14 15:42:47.780 31455 INFO freezer.job [-] Executing Restore...
2017-02-14 15:42:47.780 31455 ERROR freezer.main [-] 'FreezerConfig' object has no attribute 'nova_network_id'
2017-02-14 15:42:47.780 31455 ERROR freezer.main Traceback (most recent call last):
2017-02-14 15:42:47.780 31455 ERROR freezer.main File "/home/saad/Desktop/dev/freezer/agent/freezer/freezer/main.py", line 231, in main
2017-02-14 15:42:47.780 31455 ERROR freezer.main freezer_main(backup_args)
2017-02-14 15:42:47.780 31455 ERROR freezer.main File "/home/saad/Desktop/dev/freezer/agent/freezer/freezer/main.py", line 113, in freezer_main
2017-02-14 15:42:47.780 31455 ERROR freezer.main return run_job(backup_args, storage)
2017-02-14 15:42:47.780 31455 ERROR freezer.main File "/home/saad/Desktop/dev/freezer/agent/freezer/freezer/main.py", line 126, in run_job
2017-02-14 15:42:47.780 31455 ERROR freezer.main response = freezer_job.execute()
2017-02-14 15:42:47.780 31455 ERROR freezer.main File "/home/saad/Desktop/dev/freezer/agent/freezer/freezer/job.py", line 299, in execute
2017-02-14 15:42:47.780 31455 ERROR freezer.main conf.nova_network_id))
2017-02-14 15:42:47.780 31455 ERROR freezer.main AttributeError: 'FreezerConfig' object has no attribute 'nova_network_id'
2017-02-14 15:42:47.780 31455 ERROR freezer.main
2017-02-14 15:42:47.781 31455 CRITICAL freezer.main [-] End freezer agent process unsuccessfully
2017-02-14 15:42:47.782 31455 CRITICAL freezer.main [-] Critical Error: 'FreezerConfig' object has no attribute 'nova_network_id'