Cant get raspberry pi camera to work with octoprint

Hey, I have got a raspberry pi 4b with a raspberry pi camera v 1.3 and the latest octoprint version running on it.
I have assigned a static IP-address ( to it and activated the camera input using raspi-config.

When now beeing in my network, I cant access the video-stream.
As stream URL im using /webcam/?action=stream.

The camera works, since I can take pictures with it.
I'm not really into networking, but I think my URL is wrong, because there is no IP and port mentioned in it.

Could you please help me?