12vhpwr cable wire came out

I recently bought a SFX850 PSU but during assembly one of the wires came out(I can see the exposed wiring). I want to know if anyone has any suggestions on what I should do next. Will this be included as part of warranty or do I have to purchase another cable from Corsair? How do I know if its compatible with my psu?

I'm a beginner who has almost no idea about PC building so I appreciate any help