Swift Playground preview issues

I am a high school teacher from China, currently teaching programming courses at my school. Several issues are preventing the course from being completed on schedule. As shown in the image, there are two problems:

1. The preview issue has existed since updating to the latest software and system version; I don't know how to resolve it.
2. After renaming a Swift file, this window keeps popping up, even after closing it.

This problem didn't exist last year. How can I fix this? Thank you for your reply!

我是一名来自中国的高中教师，目前在学校开设编程课程，目前有几个问题导致课程无法如期完成。如图所示,存在两个问题: 一、自从更新了最新版本的软件和系统后,预览问题就存在，不知该如何处理 二、swift文件重命名后，一直跳出来这个窗口，关掉以后还是跳出来 去年的时候还没有存在这样的问题，请问我该如何处理，感谢您的回复！