Motor stopped in fly

Hi all, hope all of you are fine. Yesterday I was facing some issue with my quadcopter. We were flying, while one motor suddenly stops and the drone crashed from a height of 1.5 meter. I did not find anything from the log, and also did not receive any error message from remote control device also. Kindly help in this matter to find the reason. please find the link of the log 2023-07-31 13-13-30.bin - Google Drive

Thanks in advance.