It’s not executing. Try doing the steps in the .sh manually. I had the same issue and didn’t chase it down.
From a terminal that I ssh’d to the Pi, I enter these by hand…
cd /home/pi/mjpg-streamer/mjpg-streamer-experimental
mjpg_streamer -o "output_http.so -w ./www" -i "input_uvc.so -r 3840x2160" &
…
It doesn’t restart on its own. I get the same error, I’m sure it’s some form of protection level on the Pi.
