Unable to determine motor count in QGroundControl

Hi everyone!

I am having a warning which says unable to determine motor count. have anyone experienced such a problem and solved it?

please assist.

Screen Shot 2021-04-20 at 12.31.44 AM|690x397

Same problem here with firmware 1.11.3


Managed to solve this problem, please find the attached link: PixHawk 4 with Ardupilot and Mission Planner - YouTube