Invalid option 'protocol' in section 'server' in /etc/radicale/config

[vishnuraghavb]

OS: Arch linux Radicale --version 3.0.2

radicale.service fails to start with exit code=1

journalctl returned the following message:

[CRITICAL] Invalid configuration: Invalid option 'protocol' in section 'server' in config file '/etc/radicale/config'

There was no issues with radicale until last update. The protocol value wasn't changed from the default though the service kept failing.

[server]
...
# SSL Protocol used. See python's ssl module for available values
protocol = PROTOCOL_TLSv1_2
...

After commenting out the protocol. The service starts fine.