Localhost is misconfigured after El-Capitan update yesterday. Im really not a mac person so I don't know how to fix this. Localhost is working fine but my username/sites can't be found.
Exactly the same question here but the answer provided does not work for me.
Found a solution. Edit the apache configuration. In my case, the php module was commented so:
Run sudo nano /etc/apache2/httpd.conf via terminal and uncomment the following if they are commented:
LoadModule authz_core_module libexec/apache2/mod_authz_core.so
LoadModule authz_host_module libexec/apache2/mod_authz_host.so
LoadModule userdir_module libexec/apache2/mod_userdir.so
LoadModule include_module libexec/apache2/mod_include.so
LoadModule rewrite_module libexec/apache2/mod_rewrite.so
LoadModule php5_module libexec/apache2/libphp5.so