Error: Failed to load assets

I was working on a project, I has a character and a few animations in it. I had to save it and open it in another computer at home and now all it says is “failed to load assets”. I think the problem is that the source file is set to the computer at school i was using? Is there a way I can fix this and be able to work on two different computers on the same project?
The message log is empty.