Xcode 14.2 - No output on the right side

My Mac is older one. I just started to learn Swift. I want to practice it. So I downloaded Xcode 14.2 for MacOS 12.7.4 (21H1123)

On tutorials, it is showing live result. But for me nothing is happening. It is blank. How do I enable it?

The live result is automatically shown when the file has a preview block

#Preview {
    MyView()
}
Xcode 14.2 - No output on the right side
 
 
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