IT Shop Search version 8.1.1

Hi,

I have two web servers, configured with  with LB configuration.
I configured both the web servers with APP Server.
 
When I try to do search and below is the error message.
The same error message (Regardiung Entitlements) was a bug in earlier version and this is sorted out in version 8.1.1 as per release notes.
Web server error:
Please advice me.
Thanks,
Vijay