Xampp - Ubuntu - cant access my project in lampp/htdocs

I have installed xampp to Ubuntu 12.04. I have put my project in the folder /opt/lampp/htdocs/project_is_here

When I type in the browser localhost/soap/php (soap/php is in my htdocs folder) which is where index.php I get the following error:

Access forbidden!

You don't have permission to access the requested directory. There is either no index document or the directory is read-protected.

If you think this is a server error, please contact the webmaster.

Error 403

localhost
Apache/2.4.3 (Unix) OpenSSL/1.0.1c PHP/5.4.7

Any ideas how to fix this? I think this is the right location to put the project, because I tried other places and it said location didnt exist and this error goes away here and I get this.

Any ideas?