lost mavic had aftermarket 12800 mah battery any input advice appreciated here is link to flight( ) this last part of flight i had restarted app trying to save drone..
There are many more knowledgable folks who can help here but at a glance you drove to a dense forest area and started the drone where it could not establish a new home point. A common problem in a dense forest where the drone can’t see sufficient number of satellites. You might find the drone at the Home point which seems to be around 12000 ft NNE of where you were operating the drone.