Need help with default values

I was trying to use BurgZergArcade’s guide to try and get some practice with unity; I’m not entirely sure if the problem might be how old it is or if maybe I should use a different guide (really any help towards this would be appreciated). I found a solution to a problem I was having with the standard assets which generated a ton of warnings and those in turn have made it so I can’t move around when I compile the proyect. I’m assuming the problem is the highlited message but I have no idea on how to modify the document or the proyect to make it work so I was wondering if someone would know what to do?

The post where I found the solution to the standard assets problem

Problem solved.