"protocols" tool fails to remove the nfs if no virtual IP is configured for the interface group

[ghost]

./protocols --delete localhost_30032023-235549.cfg
looking for token file auth-token.json
Checking for /home/ec2-user/tools/postinstall/auth-token.json
Checking for /home/ec2-user/.weka/auth-token.json
Reading localhost_30032023-235549.cfg
Configuration loaded
Deleting from localhost_30032023-235549.cfg
Removing NFS interface groups
  Removing NFS interface group group1 ip-range
Traceback (most recent call last):
  File "protocols.py", line 278, in <module>
  File "protocols.py", line 251, in main
  File "protocols.py", line 61, in ip_list_to_range
IndexError: list index out of range
[19962] Failed to execute script 'protocols' due to unhandled exception!

Works as expected when the virtual IP is assigned.