2019-06-21 13:04:46,130 
 System.ArgumentException: The workbook already contains a sheet with this name
   â NPOI.HSSF.UserModel.HSSFWorkbook.SetSheetName(Int32 sheetIx, String name)
   â VRFSelector.ViewModel.Model.ReportModel.V1_0.NPOIHelper.ExprotProjectReport(VmReport ReportMessage, String Language)
   â VRFSelector.View.PageReport.BtnReportOutput_Click(Object sender, RoutedEventArgs e) 
 
2019-06-21 13:05:14,974 
 System.ArgumentException: The workbook already contains a sheet with this name
   â NPOI.HSSF.UserModel.HSSFWorkbook.SetSheetName(Int32 sheetIx, String name)
   â VRFSelector.ViewModel.Model.ReportModel.V1_0.NPOIHelper.ExprotProjectReport(VmReport ReportMessage, String Language)
   â VRFSelector.View.PageReport.BtnReportOutput_Click(Object sender, RoutedEventArgs e) 
 
2019-06-21 13:05:22,597 
 System.ArgumentException: The workbook already contains a sheet with this name
   â NPOI.HSSF.UserModel.HSSFWorkbook.SetSheetName(Int32 sheetIx, String name)
   â VRFSelector.ViewModel.Model.ReportModel.V1_0.NPOIHelper.ExprotProjectReport(VmReport ReportMessage, String Language)
   â VRFSelector.View.PageReport.BtnReportOutput_Click(Object sender, RoutedEventArgs e) 
 
2019-06-21 13:05:37,491 
 System.ArgumentException: The workbook already contains a sheet with this name
   â NPOI.HSSF.UserModel.HSSFWorkbook.SetSheetName(Int32 sheetIx, String name)
   â VRFSelector.ViewModel.Model.ReportModel.V1_0.NPOIHelper.ExprotProjectReport(VmReport ReportMessage, String Language)
   â VRFSelector.View.PageReport.BtnReportOutput_Click(Object sender, RoutedEventArgs e) 
 
