This is not how i wanted to start with posting to the forums however i have crashed my drone.  I was performing an automated flight for mapping and the drone took off seemingly with out issues.  it flew to where it was supposed to start and spun out of control into the hillside as it was returning home.  all propellars were on the drone when i picked it off the ground.  the battery came out but was still working.  two propellars were broken but all 4 were attached to the drone.  Any help analyizing the data is appreciated.  when it started to spin out of control i tried to intervene with the joysticks however it did not seem to respond.
Sky was clear and there were no objects in the area that it would have struck.


https://www.phantomhelp.com/LogViewer/4C4NC8TPARETBYDGWN28/

Thanks in advance,

i forgot to add.  there were two errors.  GPS Mismatch and Motor blocked

By order of probability in my opinion:
-Sand in the engine (common in quarries)
-Previously cracked propeller which broke apart in the air
-Collision with a bird (this generally leaves traces)

Motor Blocked and GPS mismatch these are the error messages that I send the drone into a tree.

I did not look to see where the pieces of propeller were that broke off when it crashed.  I will go look to see if I can find them.  

Hi there. We're sorry to know the incident happened to your DJI Phantom 4 RTK. In this case, I'm afraid that you may consider sending in the unit for proper diagnostics. You may create an online repair case using this link https://repair.dji.com/repair/index . Also, the warranty can be applied depending on the outcome of the damage assessment including the warranty period of your unit. Thank you for your kind and understanding.

This can also be a cause:

https://forum.dji.com/forum.php?mod=viewthread&tid=263357