Longer Ray5 20w Movement Protection Error while Lasercutting?

I have also an Longer Ray 5 20w. I am trying to cut a 3d Puzzle and i got every time on different parts of the Project the Errormessage on the Display of my Longer Maschine:

" ERROR
Movement protection triggered.
The machine has halted.
Please restart your machine.

Gcode Shows:
SimpleLaser 1.1h [‘$’ for help]
[MSG:‘$H’|‘$X’ to unlock]
[MSG:Caution: Unlocked]
ok”

There is no Movement, the Maschine stands stable in place. No tilt or anything.??? i have no clue? Can anybody help?

If the machine does not even wiggle during operation, there may be a GRBL parameter to turn it off. I expect you would have to contact Longer for the correct parameter.