Webcam still active in octoprint after stopping webcamd service

Hi there,

Totally new to OctoPrint and Linux in general (I know the basics).
I'm running Octopi on a raspberry pi and because Octoprint only allows for making timelapses while a print is started by octoprint, I'm trying to manually make a timelapse video using raspistill.
However, raspistill -o cam.jpg is not working because Octoprint still has a hold on the camera (Raspberry pi camera), resulting in:

mmal: mmal_vc_component_enable: failed to enable component: ENOSPC
mmal: camera component couldn't be enabled
mmal: main: Failed to create camera component
mmal: Failed to run camera app. Please check for firmware updates

I stopped the webcamd service successfully (checked it with sudo service webcamd status) but octoprint still keeps streaming from the camera.

I'd love to share the webcamd.log file but there is none in /var/log/. I also found that the webcamd service is located in /etc/systemd/system/ rather than in etc/init.d/ (this is what everyone keeps referring to in other threads)

I'm running OctoPrint 1.4.2 on OctoPi 0.17.0

What am I doing wrong?

Thank you.