I also followup with stackoverflow.com and they said As i am using third part dll dotnetgallery.dll that's why this error is occuring and i need to trusted it from hosting . I am using azure how can i get it done plz help me . I require this dll in my website .
My question at stackoverflow -
stackoverflow.com/questions/28447026/error-the-page-cannot-be-displayed-because-an-internal-server-error-has-occurred
heemanshu bhallaPosted Feb 11, 2015, 2:49 PM
http://geeksprogrammings.blogspot.in/2015/02/HTTP-Error-500-22--Internal-Server-Error-The-page-cannot-be-displayed-because-an-internal-server-error-has-occurred.html