Need Help On Analyzing What Cause the Crash!

Hi Experts, needing your assistance please on checking what causes the crash last day.

I saw Flight Mode Change Failed, but i need further details.

Scenario was: I was manually operating the Drone, pixhawk F450 frame, in ALTHOLD, armed it then push the throttle up. It stay for a few second, then suddenly crashes.

Heres the log:

Hi banjing! The cause seems to be a short circuit because the voltage of your battery dropped from 12V to 4V and your current raised to 60A. So check your cabling and the battery connections.

Thank you @davidae, I thought so I just want to confirm because i cant read on the logs. But when my drone crashes, the power module cable connected to pixhawk was detached…