Nothing happens when I press play

Hello everyone I am making my first game, things were going well but suddenly nothing happens when I press play, I have already update to the newest unity version but it persists.

I have the main camera selected, layers seem fine, I rested the camera position and also tried to switch to 3d view. Do you have any idea on how to fix this?

You can download the game project file here:

Any help is very much appreciated.

Open “scene1” and add it to the project. This way:

  1. Double click “scene1” to open
  2. File → Build Settings → Add Open Scenes

Then pressing play will work.

So, I found the scene1 and opened it, something is showing up now despite the fact the game is not working yet probably due to the script so I think it solved it. Thanks!

I get this now;
NullReferenceException: Object reference not set to an instance of an object Assets.Code.States.PlayState.ShowIt () (at Assets/Code/States/PlayState.cs:36) StateManager.OnGUI () (at Assets/Code/Scripts/StateManager.cs:22)
But I think it is for another discussion, thanks!