The bumper of your robot cleaner is blocked. First check that there is nothing obstructing the bumper from moving freely.
In certain circumstances, the Kobold VR7 Robot Vacuum Cleaner may get stuck in tight spaces and not be able to release the bumper after contact. For example, if the robot has detected a cable using object detection, it will make an evasive manoeuvre that may end up in an area of your home where there is not enough room to manoeuvre.
If you notice that your VR7 Robot Vacuum Cleaner often gets stuck in the same place with this message, you can easily mark off the area with a no-go zone.