Cant set home manually

I was doing indoor drone using optical flow sensor and tfmini plus rangefinder without GPS . I was tried to set ekf orgin and home position in mission planner manually but it was not set it shows “No SRTM data for this area”. how to resolve this problem

Connect the PC where mission planner is running to the internet so that it can download SRTM tiles

Ok I try to connect and I’ll check.

My friend, have you solved this problem? If u have solved, how can I manually set the home point?