we are getting error . when i open https://dev6-mdlive.cs91.force.com/BrokerPortal/ then we getting error  Bad Message 431
reason: Request Header Fields Too Large and also

An internal server error has occurred
An error has occurred while processing your request. The salesforce.com support team has been notified of the problem. If you believe you have additional information that may be of help in reproducing or correcting the error, please contact Salesforce Support. Please indicate the URL of the page you were requesting, any error id shown on this page as well as any other related information. We apologize for the inconvenience.

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Error ID: 1248621760-22363 (792711711)

please give me solution
username :sonuiec@gmail.com