Motion system error x

My print starts with the raft. It starts with the brim and lines horizontally. But the pauses at various stages of vertical lines of layer 2

Any ideas what is causing the error?

have you upgraded to version 2.6? if so does the older version do the same?

Im using 2.5.1 on mac.

Never had an issue until a week ago.

Tried updated mac and tried windows version.
Stopped at different points but still stopped.