Error while compiling: Friends.cs(431,29): error CS1525: Unexpected symbol `end-of-file'

I have tried reinstalling the mod many times, it doesn't compile and therefore doesnt make a config at all.
I have checked the code over to see if there is a missing } tag in vscode, doesn't seem to be.
Any help would be great.

That error means the file was most likely corrupted when uploading to your server. When uploading, make sure that the file isn't being modified in any way, which FileZilla tends to do. You can avoid this by uploading in binary mode.