More then 10 drive overcurrent events occurred during mowing.
It seems that its hard for the drive wheels to keep the robot driving.
This could be caused by dirt wheels and additional weight from a clogged mowing deck.
Please carefully clean your robot and check if the stop reason will be shown again.
Also changes in the environment like longer branches, grown bushes and so on, could make it harder for the robot to e.g mow or follow the wire.