I have a DJI Mavic Mini. Have been flying it for about a month now with out any problems untill now. the drone turns on fine but when i turn on the controller it powers up normally but then 3 lights start blinking for about 5 seconds and then it shuts off. I havent done anything different but this really sucks not being able to fly my drone. Can someone please tell me what to do about this. the controller is fully charged and updated. Like i said i havent done anything different. I need help please!!!!!