I have a pursa reprap for the last 3 months, today the x-axis stops working. I tried to move with a manual command but no movement in motor. I swapped the motor to a y-axis port of MKS-Gen-2Z V1.1 and now the motor was moving. It means the X-port has some issue or its a firmware/software problem? Never done a troubleshooting, new in this field. Thanks for support.