Ask about thinkPHP installation problem

Question

Asking the masters:

Why is the mac installed successfully in composer? When installing thinkPHP in the project, you can also see that the thinkPHP6.0 file framework has been imported. However, after configuring the PHP environment and entering the domain name, only the domain name is displayed. IT works without displaying the tp6.0 page? And entering the index.php file shows that there is no such file or path? What's going on