Failure of de-trapping at bottom of couch on Mi Robot Vacuum Mop Pro

1) Check whether the equipment is blocked by any foreign object at the bottom of couch, and remove it if any and then try again.
2) Check whether the equipment is jammed by bottom of couch, and handle it manually or isolate it with virtual wall and then try again.
3) Check whether cleaning map in App is normal, and reset it if necessary and then try again.