Asp.net - {Property Evaluation Failed.} When Exporting Data To Excel ?

I am using the code below to export records in a datatable to an excel file using EPPlus.

Dim excelPackage = New ExcelPackage
Dim excelWorksheet = excelPackage.Workbook.Worksheets.Add("DemoPage")
excelWorksheet.Cells("A1").LoadFromDataTable(dt, True)[code]....

However, after walking through the code block, at Response.End(), I get an exception {Property evaluation failed.}

Update:

The error log is:

ERROR: System.Threading.ThreadAbortException: Thread was being aborted.
at System.Threading.Thread.AbortInternal()
at System.Threading.Thread.Abort(Object stateInfo)
at System.Web.HttpResponse.End()
at Reporting.Page_Load(Object sender, EventArgs e) in C:Reporting.aspx.vb:line 38