Scene not loading on build. But does in editor

Unity Engine
1

Hello there!
I’m making a game but the next level is not loading.

I added it to the build settings and this is my code.

void Update()
    {
        cakeAmount.text = "Cakes: " + CAKES + "/"  + (GameObject.FindGameObjectsWithTag("Cake").Length + CAKES);
        if (cAMA >= 1)
        {
            if (CAKES == cAMA)
            {
                if (NextLevelWhat != 69)
                {
                    Application.LoadLevel("SampleScene" + NextLevelWhat);
                } else
                {
                    Application.LoadLevel("WIN");
                }

            }
        }
    
    }

It loads in the editor but not when the game is build in the executable. There also are no errors.

BEFORE YOU ASK: yes i also tried SceneManager.LoadScene

2

Check the log files for error messages from the build.