Swift: iTunesLibrary musicFolderLocation returns wrong location

Question

I have written an app to help me sync my music from iTunes to other devices, but since I have upgraded to Catalina, I am getting the wrong path to my library.

import Foundation
import iTunesLibrary

class ItunesHelper {
    var library: ITLibrary;

    init(library: ITLibrary) {
        self.library = library;
        print(library.mediaFolderLocation) // Optional(file:///Users/Midori/Music/1iTunes/iTunes%20Media/)
        print(library.musicFolderLocation) // Optional(file:///Users/Midori/Music/1iTunes/iTunes%20Media/)
    }
}

I'm not sure, what the problem is, but my iTunes folder is called 1iTunes and I don't know, why there is a 1 in front of the folder name. I have checked my old xml files and haven't found anything. I can't open the new Music app library file unfortunately, but Music (the new iTunes) does show the correct path in the library and everything is playing fine.

I have tried another project and I get the same results. Does anybody know, what the problem could be here?

edit: I just played around with my music library's location and I can see, that the actual location I'm getting from the music app has absolutely no influence on the location I am getting from the ITLibrary's musicFolderLocation. So I assume it must be getting it from somewhere else... the question is, where?

Thanks!