Can't click ANYTHING all of a sudden.

I can't click on any buttons on my game scene all of a sudden. All I did was move around some GameObjects...
I do have a Canvas and an EventSystem. Also my button has Raycast Target set to True as well as the Interactable set to True.

I tried adding another simple canvas with an original Unity Button to it, not clickable... (The button doesn't even turn slightly dark when I hover or click).

If I go to other very similar scene, the canvas is working...

Any ideas why is this?...

 

Fixed it... apparently I accidently dupplicated a GameObject inside of the Canvas...
This GameObject is simply a white image that fades away to transition between cameras with the components shown in the image. Why would having two gameobjects with these components disable all my clicking?....