============================================================================= Provide Fault: String reference not set to an instance of a String. Parameter name: s StackTrace :System.ArgumentNullException: String reference not set to an instance of a String. Parameter name: s at System.Text.Encoding.GetBytes(String s) at eTurnsServices.Helper.DatabaseSVCHelper.getSHA15Hash(String input) at eTurnsServices.Helper.DatabaseSVCHelper.AuthenticateUserAndGetModuleAccessInfo(String userName, String password) at eTurnsServices.EDIwebService.AuthenticateUserAndReturnModuleAccessInfo(UserCredentialDC objDTO) at SyncInvokeAuthenticateUserAndReturnModuleAccessInfo(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet) Date :11/26/2018 10:11:17 AM =============================================================================