MSS Reports HTTP 500 Internal Server Error

Hello,

We are implementing MSS EHP6 to our client and we went live and everything is looks good and working fine. Suddenly we have an issue when we are launching MSS Reports----->Select Report----->Select People---->Click on Launch Pad:

Then we are getting information Page:

HTTP 500 Internal Server Error

Most Likely causes:

. The website is under maintenance

. The website has a programming error

Any body have any idea.....why i am getting this error.....please help me.

Thanks in Advance.

-Abhiram