Black screen on build

Hello, my problem is that when I open my build the screen is totally black, it only shows the mouse.
I did some tests like putting the lowest quality in presset but it doesn’t work, and I put a song on the scene in play in awake and it sounds on the black screen.
I’m using unity 2019.4

Thanks.

In the camera of your scene, find the option “Clear Flags” and check if it is set to “Don’t clear”. If it is, change it to something else. This option can lead to unexpected behaviour.