Satellite connection in Mission Planner

I am using Mission Planner 1.3.77 and Pixhawk 2.4 in my autonomous ground vehicle. Now, I am seeing that satellite is not connected in my mission planner. I saw it even a few months ago. What should I do to fix it?

Troubleshoot the reason you have no GPS of course.

My GPS is connected. Even I use Piksi multi for pinpoint accuracy.

Well it shows no GPS in the HUD so it’s not going to show any Sats.
I suppose you have read this:

Well, I am facing another issue too. I have tried to connect swift navigation with Mission Planner by following the installation guideline but it is not connecting.

Sounds like a hardware problem not a Mission Planner problem.