`Apache` `localhost/~username/` not working

Question

UPDATE: The following answer will also work for El Capitan.

For people who just start, the file mentioned below is under /etc/apache2

For th

Answer 1

In Apache 2, you've to enable mod_userdir extension, e.g.

a2enmod userdir

^{Prefix with sudo if required.}

Then reload/restart Apache.