
We are sorry to hear you had an incident. If your batteries are getting older and haven't been properly calibrated recently it makes it so the reported amount of power remaining in the batteries can be in accurate when it gets down towards the end which is what sounds like happened here.
Your most recent log file looks like it made it back to the landing site so make sure all of your log files are uploaded so we can check again. You would need to make sure the log file for the affected flight is in the system so we can review it.