This is what I get if I try to launch the Project with F6.
Code https://github.com/MeLikeyCode/GodotTopDownShooterTutorials
Tutorial Playlist https://youtube.com/watch?v=JTXan5M92ms&list=PLMgDVIa0Pg8W54idRaVn2ZCnFmQ7gWMmG
It worked until video 2 but at the third and fourth video I had to copy the code because he didnt show the 'Main' to get created.
I assume it should be a simple one to fix this?
Does running the project work if you set a main scene and press F5?