I can't preview my project

Hi, I'm developing an app in Swift Playgrounds, but I can't preview it because it says “App Preview Crashed”. I don't understand why I get this. I have collected and shared the project information. If someone can help me I would greatly appreciate it.

Project Diagnosis:

Can you show your code? (Not partially, the whole code. And not image, code as text using Code Block.)

try bump down to IOS 15.1 and resume

I can't preview my project
 
 
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