EPPlus Error File contains corrupted data

I am trying to create a new excel sheet(xlsx) from existing excel sheet(xlsx) using EPPlus.

My existing excel sheet contains 4 worksheets and I want to update some cells in new excel sheet and save it in new location.

Here is my code

   public string RunSample22(DirectoryInfo outputDir)
{
    FileInfo tempFile = new FileInfo(@"F:\bin\Debug\ReportTemplateFile.xlsx");

    // Making a new file 'Sample2.xlsx'
    FileInfo newFile = new FileInfo(@"E:\Test" + @"\Sample22.xlsx");

    if (newFile.Exists)
    {
        newFile.Delete();
        newFile = new FileInfo(outputDir.FullName + @"\Sample22.xls");
    }

    using (ExcelPackage package = new ExcelPackage(newFile, tempFile )) // getting error in this line
    {
        // Openning first Worksheet of the template file i.e. 'Sample1.xlsx'
        ExcelWorksheet worksheet = package.Workbook.Worksheets[1];

        worksheet.Cells[1, 1].Value = "Test";

        // Save our new workbook
        package.Save();
    }
    return newFile.FullName;
}

And Getting below error in my catch block.

"File contains corrupted data."

What I am missing or any suggestions.