What does it mean when the XAG app says "Unable to take off (reserved)?"

It indicates that the drone has detected insufficient flight conditions:
1. It may be due to a bad environment. It is recommended to check whether the UAV's positioning systemhas entered RTK mode prior to takeoff, and then perform the self-check test on the motor system.
2. If the UAV still cannot take off after passing the self-check, it is recommended to change the take-offpoint, restart the drone and the companion app, and upload the route again.