What did happen on this flight?

My Hexacopter crashed suddenly and fall down.

Can anyone help what exactly did happen on this flight log ?

I do not think it did hit any tree, but can you see that on the log plot anywhere, i am pretty sure it did not hit anything ?

It did have low battery only 30%-20% left, but this could not cause the crash right,
also the crash happen doing auto lang and in Orbit mode.