The following information is from the pmacct-frontend website:

pmacct frontend

Quick and ugly statistics frontend for pmacct for my personal use. Needs some code cleanup and documentation. See a screenshot

If using Apache, ensure you have mod_rewrite installed, and AllowOverride set to "All" (or just copy the contents of .htaccess into your Apache configuration). For other web servers, you will have to convert the rewrite rule in .htaccess to your server's equivalent.