Carves stopping mid job

I just fixed my issue where the y axis wasn’t responding. unless there was more than one problem (wiring et) turning up the potentioemeter fixed it, but on test cuts now the job is stopping as if finished. then I have to setup the machine again from easel, what could be the issue?

Usb cable or usb port shutting off.

hi it seems a usb powered hub and/or usb port management solved issue