you are using a non-x11 window system (e.g. wayland) which is currently not supported by simplescree
you are using a non-x11 window system (e.g. wayland) which is currently not supported by simplescreenrecorder. several features will most likely not work properly. in order to solve this, you should log out, choose a x11/xorg session at the login screen, and then log back in.
