I have a problem with Build

I have a problem with the Build! I makeing the main menu for my game and I want to put it when I click on start to start the game. I went to the “Build Settings” and put my game. But it tells me some problems in the console such as: "The reference script of this behavior is missing!
"… and some more! When I go to my project where the game goes perfectly! Help pls!

if the color of the error is “Yellow” its not such important u can always ignore the yellow color errors;