Pixhawk drone falls out of the sky

Hi, I kindly request somebody to please help me, my Pixhawk just fell out of the sky with an almost full battery and it was totaled. Here is a link to its log:


I cannot figure out what went wrong, it just dropped out of the sky as i was descending, it dived into the ground, i tested the damaged battery with a multi-meter, it has almost 24v, it was still full, it crashed after about 5mins. the pixhawk controller sustained no damage after the fall, but air-frame was no-more. Kindly someone, please help