I am working with ubuntu 16.04 and I am trying to understand how phalcon and developer tools work. I have created a project in my lamp configuration apache 2.14.18 php 7.0.13 and mysql 5.7. The lamp directory is /var/www/html So, I have done phalcon project aroma and then phalcon webtools enable When I run webtools.php with firefox / firefox developer edition and chrome and I got the following message in the web console GET https://localhost/css/webtools.css HTTP 1.1 404 not found I will appreciate your help.