Having problem to test freepbx after amportal start

Hi, I’m newbie to freepbx and asterisk. I have some problem after installing. After starting the amportal and everything, following are shown:


SETTING FILE PERMISSIONS
Permissions OK

STARTING ASTERISK
Asterisk is already running

STARTING FOP SERVER
FOP server is already running

Later I try to visit the ip address http://xxx.xxx.x.x/ and the page is displayed with the links of
Voicemail & Recordings (ARI)
Flash Operator Panel (FOP)
FreePBX Administration

But when I try to click on any of them, following problem has occured :


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

How can I solve this? Can anyone help me out? Thank you.