Loaded project today and ALL my UI scripts cant be loaded.

This morning I load up my project and when i hit play it throws an error saying "object reference not set to an instance of an object". Which isnt a bad error really BUT then i check it out and its saying my UI is missing, specifically some UI text. When I check my canvas, ALL my UI images, buttons, masks, ect are like this:

If anyone knows what is causing this please help me out here. I tried just remaking everything on the canvas BUT when i add a component like a mask on an image, NONE of the UI options on there to select. I even type "Mask" into the search bar and none of the UI options are there. Only GUI.