When I run php -S localhost:8000 in the folder /Users/zhengxinyong/Desktop/webtool/ after performing all the instructions such as composer install, my localhost page is blank and my console returns ...

I installed DVWA on XAMPP but, when I try to go to localhost/dvwa in the browser it sends me to the localhost/dvwa/login.php web page which is blank. I've manually typed localhost/dvwa/setup.php in ...