If you are comfortable with it, I took the left top off my “laserblade” to trace that cable and get you some pictures.
It also helped prepare me for the inevitability.
The cable turns a few corners and enters the drag chain, comes out of the bottom of the drag chain and connects to the board where indicated.
https://photos.app.goo.gl/3tGUhAC84CY5T3kk7
https://photos.app.goo.gl/MZ8uREFVUg4grDtg9
The drag chain also carries the coolant supply to and from the tube, a high voltage lead and ground wire. It looks like a challenge to thread the cable through there, but I would accept that challenge and spend a day or two doing it rather than send the entire machine back and bear that risk and expense.
So personally, I would request the company send me a replacement ribbon cable, but that’s just me - I like knowing the guts of my machines, and I enjoy the understanding and education.