Machine suddenly stopped

I am halfway through etching a slate and the machine has suddenly stopped and this message came up, G-code locked out during alarm or jog state.
error:9
G-code locked out during alarm or jog state.
error:9
I tried switching it off and on again but nothing changed, How do I continue please or does this mean the machine has died?

I typed in ‘error code 9’ into the LB Search and it returned this earlier post. Have a read and see if you can see how it was dealt with.

Post your settings etc as was suggested.