I upgraded Unity and a scene crashes after open it

Hello.

I upgraded my unity 5.5 to 2017.1, and everything on my project was fine, except for one scene that when I open it, unity crashes. the scene have a menu made with a canvas, it worked fine on 5.5 version but here crashes. is there a why to fix it? or I should use my backup and back to unity 5.5?

Thanks

Never use the latest Unity version for a serious project.

I’d get 5.6.3.