Motor stops spinning

Hi. i have tried all flight modes, but for me motor spins only in manual mode. when i switch to any other mode motor stops spinning.
APM v3.1
Arduplane 3.4.0
Armin chek disabled
Armin requared disabled

@Danukas,
Please provide tlogs and dataflash logs to help troubleshoot your issue.
Regards,
TCIII GM