Vtol suddenly bent to the right and hit the ground, what does the log records say?

Hello friends, Unfortunately, I had a crash with my 4 meter vtol plane today.

We first removed our vtol, which we just started to install, with QSTABILIZE mod, then we switched to Q_HOVER mode.

It was flying nicely, after waiting for a while, we chose Q_LOTIER from the list to make the flight mode Q_LOTIER from the mission planer > action> section.

Although we did not press the apply button, the plane tilted to the right and crashed to the ground. We could not understand why this happened.

Is there someone who will understand why by examining the log record. We would be very happy if you could help.

Please post a log file. Preferably .bin from the flight controller, not a .tlog.