Xcode Preview does not work out of nothing

Hey guys, first: I am a totally beginner noob in coding, I have no clue! :D I am working at the moment with cursor and xcode on an app, like a todo-List. So the editview to generate a todo is working properly on my iphone but in the preview from xcode, it just stoped working. I can click every Textbar but it seems like ky keyboard is not working. I can tip whatever I want and there is nothing showing in the textbar. Its weird, because yesterday everything worked fine and now its just not working anymore. I asked chatgpt to visit the code but the code seems fine.

Also I read in a forum, that this can be a problem of xcode itself and will vanish over time. Somebody know this kind of problem or would be up to revisit the code with me? :D