That's a connection error, If you never opened the Drone or had a crash, I would say you need a new IMU....You can try to reload the firmware BUT If the error just all the sudden appeared for no reason and its not intermittent, I think your ESC...
I've found them more fragile when "trimming" tree branches and in bird strikes. They tend to shatter rather than bend, leading to more prop damage, and a greater likelihood of not being able to recover and still fly back home on lightly damaged...
I've been using the Master Air Screw props on my M2P for about two years now. I haven't seen any real benefit in terms of noise or extended flying time, but they have worked fine for me.