Message: Nullable object must have a value.
InnerException: Sem InnerException
Source: mscorlib
StackTrace: at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at transparenciaWeb.ObraServico_Detalhes_RelatorioExcel.ProcessRequest(HttpContext context) in C:\Sistemas\SistemasCompartilhadosWebForms\TransparenciaWebPMG\ObraServico.Detalhes.RelatorioExcel.ashx.cs:line 392
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)