Why do I get an Error 404 when trying to access to a cakePHP 2.x project in Plesk?

I made a project using cakePHP 2.6.13 and hosted it in Plesk, however whenever I try to access any .php or .ctp page it says that the file does not exist but it can access the .html files without a problem.

I've changed the .htaccess routing but the server still says that the files do not exist.

I'm new at web hosting so I don't know what else to do.