i wasn't sure where to ask for help, so I apologize if it seems like a "newbie" question.
So I opened up my ultimate fx lightsaber to try and fix the screw mechanism inside. Some wires popped off from the battery, I didn't think much of it because I could just solder them.

However when I was about to solder them, I noticed that one of the wires completely tore off the green part of the motherboard, but it was still soldered on to the metal part.

What can I do? Please help.

Here are some images:

https://imgur.com/a/NBQ7P

Thank you.

 

It looks like you could solder the wire direct to either of the arrowed points on the board.

 

It looks like you could solder the wire direct to either of the arrowed points on the board.
View attachment 145659

Certainly soldering the wire to the remaining end should work fairly well. If there is a component connected to the other end you will need to use a piece of bare wire to join it to the connection. I have repaired quite a few damaged circuit boards that way, as well as making changes to the circuit arrangements.