Hi, I live in Singapore and have been flying a Mavic 2 Pro near or around the Barrage since I bought it , however today I had a new warning appear in the Go 4 app that I have never seen before. The warning stated "Current RTH Route will Pass a No Fly Zone. Pay attention to the aircrafts position to avoid RTH Failure."

What on earth does this mean? I am no anywhere near a NFZ with RTH. As I fly over the sea at about 40m I am somewhat worried that I will not be able to get my Mavic 2 pro back or worse lose control.
The warning came on as soon as I took off and reached 1 m from the ground.
Is this a software error?

There might have been a temporary NFZ in place where you were flying.