Hi! Thank you for this great project. In README there should be:
mkdir -p ~/.config/obs-studio/plugins/wlrobs/bin/64bit
cp libwlrobs.so ~/.config/obs-studio/plugins/wlrobs/bin/64bit
cp build/libwlrobs.so ~/.config/obs-studio/plugins/wlrobs/bin/64bit
Fixed by 1bac9fa0c2d8 and 984b763ce157 respectively