Estopped message

Newbie here… Have been watching many You Tube videos on getting my feet wet. When I get an Estopped message on my screen … how am I able to abort/ get out of the attempted program? I am using a flattening file for a waste board 32 x 32. I originally made the waste board 32.125 x 32.125. So I’ll cut it down to 32 x 32 but still wanting to know how to get out of the Estopped message when it would appear on a future job.

You will likely need to hit the red estop picture on the controller interface to reset it and then re-home and re-zero the machine.

thank you for your help working on becoming more and more familiar with my new toy!