Error in Gmail Login

Hi,
I am using Gibbon on free web hosting of infinity free. I tried to setup gmail log in by following the instruction in the Gibbon website. After successfully verifying everything, i get the error of

This page isn’t working

(my website) is currently unable to handle this request.
HTTP ERROR 500

Sorry problem solved.

No problem : ) Can you let us know the solution, as it may help others in the future. Thanks!