Imgur is not loading for me, but the error tells you exactly what is wrong, what file is the problem, on which line of code etc. You just have to do some investigation. You don't have to move any files, but in the script code you have to make sure that the names of things are correct (right spelling, referring to the right folder, etc.). But honestly, if this is too much to figure out, you should start with an easier project and not jump ahead too fast. This would be my suggestion on where to start:
https://docs.godotengine.org/en/stable/getting_started/first_2d_game/index.html
