I am using a 3D Printed Quadplane, the firmware I am using is, V4.5.1. with a Pixhawk Cube Orange+ and GPS is Here 3. I had a maiden for Transition, The plane was fine in Q_Loiter and Q_Stabilize. upon shifting to FWBA, the Cruise motor started but then stopped and I started getting an error for Compus variance/offset. and the plane started to become unstable.
I have attached the log file, flight video and mission planner screen recording.
https://drive.google.com/drive/folders/1Ws5mx1eLCDvQKVd8f5_LV-EaDbu_7ADy?usp=sharing
Any help or suggestions would be highly appreciated