I am following a tutorial for fun, am not at all programing savy. I did every single thing the tutorial said, the only difference was that I stopped for the day and in the morning when I openned the project to continue all my code wasn’t working. I noticed only when I needed to open a script I had already done and when apllying to an object it gave me this notice:

Then i realized nothing was working and all my scripts give the same message.
I searched forums with similar problems but couldn’t find a solution. Hoping someone can help me here. Thanks!
Am using 2018.2.8 because it was the closest to the tutorial and I didn’t want to have any issues, thought it was best.
Don’t know if this is a good one, but an example of the code.
With my limited knowlege i really don’t know why it isn’t letting me even apply it to an object, I get no errors in visual studio.
