Polar Mohr 76 em 84 error code

Hello, while using my Polar Mohr 76 em cutter today at work, I encountered a 84 error code.

My machine finished the cut and once the blade went back to starting position the clamp stayed down stuck and showed the 84 error code.

I turned off my machine and turned it back on and everything worked fine again.

Does anyone know what that code means? My machine is fine after restarting, but I have a feeling I will be encountering the error code more frequently and want to be prepared.

If anyone has any information of what might of caused it and fixes please let me know.

thank you!