Mower found stopped outside. Robomow App and mower’s display will probably say “Crossed outside”.
This is typically an installation issue such as slopes exceeding the allowed limit, or slopes of up to the allowed 11 degrees with combination of wet grass, narrow pass created wrong or too close to obstacles, perimeter wire installed too close to the edge and other scenarios. Wet grass might make things worse. It could also rarely be a true fault with the mower.