Pi 4 multi cam not showing in ssh

What is the problem?
Trying to get the plugin multi cam to work. following this guide OctoPrint Multi-cam Plugin - Chris's Basement - YouTube but when i load the config.yaml up the plugin multicam is not showing. i have installed it and it shows on octopi.local.

OctoPrint version : 1.5.3
OctoPi version : 0.18.0

how can i fix this?