Uploading Cakephp site to live server and getting error 500 internal server error

amitava

I have created a cakephp site and uploaded to my staging server. The Url is http://xecutiontech.com/rr-2/
In my staging server the site has been uploaded to the folder named rr-2 that's why the url looks like xecutiontech.com/rr-2. The site looks ok if I hit the above mentioned url.

My client has provided a domain http://www.hotelhomelyraj.com/ which is now pointing the folder named rr-2 which is in my staging server. So clients domain is pointing to the same folder.
It means if I hit the url http://www.hotelhomelyraj.com/ the site should open but Its showing 500 Internal Server Error. This the problem please help me.