Drone maiden flight fail

Hi. I wanted to test my configuration for octocopter 15.55 props 1270mm frame with a drill on the bottom but it did 180 degree flip. Props and motors were connected correctly. ( Sry for the light, or rather the lack of it… )

film:
https://drive.google.com/file/d/15QJ7wHTQX7eSBt2R5jDl3_mGXJWikic1/view?usp=sharing

logs
https://drive.google.com/drive/folders/1veLeZkOH9oEhqiBuluXVggw9i-TRvU9f?usp=sharing