Audio Listener not working.

The audio listener on my First Person Controller was working perfectly well until I made a new scene (I duplicated the First Person Controller onto that new scene) when I entered the scene the audio listener wasn’t picking up any sounds. I selected my audio source in the inspector and saw that the audio source wasn’t detecting a listener within its range. I am absolutely certain that the listener is close enough to hear the audio source? Any help would be appreciated, thanks in advance.

Try restarting Unity, this happens to me sometimes. Just restarting it tends to work fine.