php -S 127.0.0.1:8000 -t public not works

When I run this command: php -S 127.0.0.1:8000 -t public the error is can not open file 127.0.0.1:8000

I'm using symfony 4, when I lunch the server with the command php bin/console server:run it works, but with command php -S 127.0.0.1:8000 -t public it doesn't work.