Check if the issue still occurs after each step.
- If the drone's flight status LEDs (rear LEDs) are blinking in blue, the drone may be restricted due to obstacle detection or a flight-restricted airspace (geofence zone, UTM-regulated zone, or user-specified zone).
- Make sure that the stereo cameras are not dirty. If they are, gently wipe them clean with a soft, dry cloth.
- If the issue still occurs, calibrate the stereo cameras.