这是什么情况,为什么失败?why?

随便创建一个项目都会报错同一个问题,但是如果用一个例子也就是example不会报错,我是一个小白,第一次接触这个ide请大佬们告诉我是怎么回事。

Any time I create a project, the same error will be reported, but if I use an example, it will not report an error. I am a novice. It is my first time to come into contact with this IDE. Please tell me what is going on.