This happened to me this morningThank you for your answer. I read that it could happen in RTH mode when you have the sun in front of the drone. When this happends the drone stops and goes up and battery exhausted and drops! That's why I am worry.
I was a couple miles out and when I pressed Return To Home it was facing directly into the rising sun and kept giving me the Braking error and wouldn't budge
I was able to to fly it back manually but braking every few seconds.
It had 6% battery when I finally got it home
Now I'm thinking I probably could have flown it home backwards to avoid the sun