My game when restarting the sound is not heard

It is a 2d game when I start the game, everything works fine but when I lose and I give my restart button, which is a button that I made, the game sounds and it gives me this error:
Argumentnullexception: Value cannot be null.
Parameter name: source

Do you reload the scene when you lose and click the restart button? If so, then you’ll have to show your script to find out what’s wrong @isaiasperez706