GameJam Menu Template Error

Hi, this question involves the GameJam Template that was done in a live Training: https://www.youtube.com/watch?v=j9CqczkeYJY

I got all the scripts and objects set in my scene, but every time I hit the start button I get this: "UnassignedReferenceException: The variable fadeColorAnimationClip of StartOptions has not been assigned." "You probably need to assign the fadeColorAnimationClip variable of the StartOptions script in the inspector."

I don't know why this is an exception because that variable has the [HideInInspector] code to it. I feel like my head is banging the wall. I just can't see past this error to get it to work. When I remove all of the fade animation from code/objects, changing scenes work.