QuadPlane Disarming Issue – Unable to Disarm via Rudder or GCS

Today, I did a flight test with my quadplane. I took off in QSTABILIZE and GUIDED mode. When I noticed significant oscillations, I decided to land. However, I tried to disarm using both Disarming by rudder left and throttle zero and the GCS, but neither method worked. In the end, I had to unplug the battery.

When I checked RCIN.C4, I found that the signal did not drop to min value as recorded by the flight controller, even though I had performed the action.

On the GCS, the last message I received was:

‘VTOL Overshoot d=282.7 cs=-1.8 yerr=96.4’

Please give me some feedback on my quadplane. Thank you! log file