An attempt to commit the subject changes results in the following error:
```
Traceback (most recent call last):
File "/usr/libexec/vyos/services/vyos-configd", line 144, in run_script
c = script.get_config(config)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/libexec/vyos/conf_mode/firewall.py", line 148, in get_config
if 'vrf' in local_zone_conf['member']:
~~~~~~~~~~~~~~~^^^^^^^^^^
KeyError: 'member'
[[firewall]] failed
Commit failed
```
**Steps to reproduce:**
```
set firewall zone LOCAL local-zone
commit
delete firewall zone LOCAL local-zone
commit
```