I think you need to create a new folder in the default location.
Probably, once you start the game without mods and once you create the save data, the basic folder structure and files other than mods will be placed under AppData.
After confirming that the basic folder has been created, create a new "Mods" folder in "C: \ Users \ * username * \ AppData \ LocalLow \ Glitch Pitch \ Idol Manager \".