Unable to access webcam

What is the problem?
I finally got set up with octoprint, I am unable to view the webcam, I have both the pi camera and the pi camera and a logitech quickcam usb camera. None of them seem to work
What did you already try to solve it?
I edited a file on the sd to try and access the camera, many more things, tried a sencond set of raspberry pi cam.
Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, octoprint.log, serial.log or output on terminal tab, ...)
I am using a pi 3B, Printer is Prusa Mk2s, firmware for the pi 0.16.