Camera only loads on snapshot test, normal stream: error 501: Not Implemented! no www-folder configured

Camera model

Wansview 102

What is the problem?

I've installed OctoPrint on a Ubuntu Server on Proxmox, because i want one server for everything. But the problem is, that the camera doesent work properly (ERROR: 501: Not Implemented!
no www-folder configured). To start mjpg streamer i use this command:
./mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 1280x720" -o "output_http.so"
while i'm in "/home/bruno/mjpg-streamer/mjpg-streamer-experimental"

When i test the snapshot url it works, but not on the live stream, where i have the error: 'ERROR: 501: Not Implemented!
no www-folder configured'

What did you already try to solve it?

i tried adding '-w ./www' to my command, but that didnt work either.

Systeminfo Bundle

octoprint-systeminfo-20231028221536.zip (33.3 KB)

WRITE HERE

My Hardware(for the proxmox vm with octoprint): 4GB RAM, 32GB ROM. 2 CPU Cores of a i5-9500T.
The operating system in the vm is the newest ubuntu server