Error displaying the web

Hi,
I am using PHPunner to create a web. I successfully connect to the database and using my own web server.
But when I type the URL, it display error 403.

http://IPAddress/test
I tried to direct the URL to the file but when I add a record and then click "back" button, or I just click search, it will display the following error message.

http://IPAddress/test/project.php

Non-static method SearchClause::UnserializeObject() should not be called statically, assuming $this from incompatible context

Can anyone kindly help? Thanks.