Aug 31, 2015 03:08 AM|Krunal Parekh|LINK
First of all I would suggests that you check IIS logs + put Trace logs in your code to see exactly what's going on.
As for the basic configuration on the SSRS report please see:
Create a Basic Table Report (SSRS Tutorial)
If you can narrow down the problem using IIS logs or the troubleshoot article then community members would be able to help you more.