Product(WR140) LANDROID M 20V 4.0AH ROBOTIC LAWN MOWER (1/4 ACRE)Outside
(WR140) LANDROID M 20V 4.0AH ROBOTIC LAWN MOWER (1/4 ACRE)

Outside

Try this solution

Power off the mower, take Landroid inside the working area, and restart

Possible cause:
Landroid cannot find the boundary wire signal.