Thank you so much for playing my game. I tried to add a key pick up sound but somehow when the player picks up three keys the sound plays correctly but when you pick up the fourth key the sound does not play and it gives an error. I struggled for hours trying to resolve this issue but sadly I didn't find any solution. So i had to remove the key pick up sound. I will try to fix it after the jam ends. Again thanks for playing my game I really appreciate your feedback.