PHP/jQuery Debugging

We have a PHP website running on a Fedora system that we need help troubleshooting an issue. The site utilizes jQuery to pull data from another website. Everything was 100% functional but we recently restored the website data files to a previous state and seem to have some type of permissions issue. The code should be 100% functional as-is, we just need someone to troubleshoot what is likely a permissions issue. We will provide TeamViewer access to the server via SSH as well as a browser with FireBug. We would like someone that is available to begin work immediately.