Opening Log file but, showing Log browse... missing FMT message

The VTOL took off and Fly in cruising mode after transition. The VTOL went perfectly at first but later on the VTOL got crashed. pilot tried to Save it but time was less. After crash the battery was seperated from VTOL and other electronics also the memory card was outside of F.C. pixhawk 2.4.8.
Want to check the log file to investigate the crash but log file has only .bin file.
Please provide solution how to recover or open the .bin log file as it is showing the ‘missing FMT’ message.
Some how with python we recover the Tlog and Rlog. but it is opening only in UAV Log Viewer .
After seeing the log couldn’t understand why the VTOL’s electronics turned off in flight.
The Flight test video, error screenshot and .bin log, tlog n rlog file is attached.
Check here

Your bin log file contains all zeros. No way to repair the file itself.
However you can try repair the fat table on the sd card, just get some sd card recovery software but no guarantees.
If the electronics turned off, you most likely had a power failure or a sh**ty chinese clone 2.4.8 went poof. Sorry for your loss, but with those budget flight controller imitations, you get what you paid for.

Ok, it might be clone but with recovered tlog, rlog of same flight can u see the cause of the failure using UAV LOG VIEWER since I never use that…

Nope, logs just cut, no signs of error. Bad connection, bad battery or something else in the power system. (or flight controller)