Backward vision sensor error Mavic Air 2s

[Roger Mavic 2s]

My drone is a Mavic Air 2s.
I frequintly receive this error message; Backward vision sensor calibrationerror. Auto calibration in progress... (code: 180002)

Any ideas?

 

[Roger Mavic 2s]

My drone is a Mavic Air 2s.
I frequintly receive this error message; Backward vision sensor calibrationerror. Auto calibration in progress... (code: 180002)

Any ideas?

Does anyone have an idea what is causing this?