error at the time of calling webservice

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C#

webservice

Hi All ,
When i caal the webservice its works fine in my local system when i publish to server it gives below error.

The server encountered an error processing the request. The exception message is 'An item with the same key has already been added.'. See server logs for more details. The exception stack trace is:

at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) at StarIndia.Framework.Service.Common.Akamai.AkamaiHeader.