switch AR scenes

Hey, I am working in an Augmented Realiy project for Android by using Unity. Th problem is that I create a Main menu and select one scenario. But if I want to return to the Main Menu, the application close. Does anybody knows if there is something different to switch between scenes in Android for AR applications? thank you

Please Go Into More Depth With Your Question... Such As: "I have made an 'AR' Program In Unity That Runs On Android, But Whenever I Return To My Main Menu, The App Crashes... I Think It Might Be Because My "ReturnToMenu" Script Has An Error, But I'm Not Sure. Heres My Script: `101010`

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