hi, thank you for the support. i tried setting COM_RCL_EXECPT and the fail safe warning seem not exsit anymore… however i got this notify from QGC so i cannot arm the vehicle
There may be different problems that cause this situation. You can see the reason from warning tab at left top of the screen like this:
Something preventing arming. Like high throttle,flight termination or AHRS healthy. Check these flags.