无法加载文件或程序集“SixLabors.Fonts”ClosedXML NugetPackage

Question

在生产中，我尝试使用 ClosedXML nuget 包将数据库表导出到 Excel 中，但是我在标题中收到此错误，我在本地主机上尝试了它，但它工作得很好。 我检查了生产中的 dll 文件，并且存在 SixLabors.dll。这是我的代码 我正在使用 Asp .Net Core 6

     public IActionResult ExportProductsToExcel()
        {
            const string contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
            string fileName = "Products " + DateTime.UtcNow.ToString().Replace("AM", "").Replace("PM", "") + ".xlsx";
            try
            {
                using var stream = GetProductExcelStream();
                var content = stream.ToArray();
                return File(content, contentType, fileName);
            }
            catch (Exception ex)
            {
                Helpers.LogAPIResponse(_hostingEnvironment.WebRootPath, "ExportProductsToExcel", "Export products Logging", ex);
                return View();
            }
        }
        public MemoryStream GetProductExcelStream()
        {
            using var workbook = new XLWorkbook();
            List<VcproductCatalog> vcproductCatalogs = _context.VcproductCatalogs.ToList();

            var worksheet = workbook.Worksheets.Add("Products");
            // worksheet.Cell(1, 1).Value = "Id";
            worksheet.Cell(1, 1).Value = "Name";
            worksheet.Cell(1, 2).Value = "SKU";
            worksheet.Cell(1, 3).Value = "Description";
            worksheet.Cell(1, 4).Value = "Format";
            worksheet.Cell(1, 5).Value = "Vintage";
            worksheet.Cell(1, 6).Value = "Appelation";
            worksheet.Cell(1, 7).Value = "Classification";
            worksheet.Cell(1, 8).Value = "Color";
            worksheet.Cell(1, 9).Value = "Price";
            worksheet.Cell(1, 10).Value = "Active";
            worksheet.Cell(1, 11).Value = "Cover Image";

            var index = 1;
            foreach (VcproductCatalog product in vcproductCatalogs)
            {
                // worksheet.Cell(index + 1, 1).Value = category.Id;
                worksheet.Cell(index + 1, 1).Value = product.Name;
                worksheet.Cell(index + 1, 2).Value = product.Sku;
                worksheet.Cell(index + 1, 3).Value = product.Description;
                worksheet.Cell(index + 1, 4).Value = product.Format;
                worksheet.Cell(index + 1, 5).Value = product.Vintage;
                worksheet.Cell(index + 1, 6).Value = product.Appelation;
                worksheet.Cell(index + 1, 7).Value = product.Classification;
                worksheet.Cell(index + 1, 8).Value = product.Color;
                worksheet.Cell(index + 1, 9).Value = product.Price;
                worksheet.Cell(index + 1, 10).Value = product.Active.ToString();
                worksheet.Cell(index + 1, 11).Value = product.CoverImage.Replace("\r\n", "");

                index += 1;
            }
            worksheet.Columns().AdjustToContents();
            worksheet.Rows().AdjustToContents();
            // Change the first row color 

            for (int i = 1; i <= 11; i++)
            {
                worksheet.Cell(1, i).Style.Font.Bold = true;
                worksheet.Cell(1, i).Style.Font.FontColor = XLColor.White;
                worksheet.Cell(1, i).Style.Fill.BackgroundColor = XLColor.FromHtml("#d74114");
            }


            MemoryStream stream = new MemoryStream();
            stream.Flush();
            stream.Position = 0;

            workbook.SaveAs(stream);
            return stream;
        }     

这也是完整记录的错误：

    Could not load file or assembly 'SixLabors.Fonts, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d998eea7b14cab13'. The system cannot find the file specified.

   at ClosedXML.Graphics.DefaultGraphicEngine..ctor(String fallbackFont)
   at ClosedXML.Graphics.DefaultGraphicEngine.<>c.<.cctor>b__29_0()
   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
--- End of stack trace from previous location ---
   at System.Lazy`1.CreateValue()
   at ClosedXML.Excel.XLWorkbook..ctor(LoadOptions loadOptions)
   at VCCruise.Controllers.AdminController.GetCruiseExcelStream()
   at VCCruise.Controllers.AdminController.ExportCruisesToExcel()    

• 在本地和生产服务器中找到了丢失的 DLL 文件
• 下载了 SixLabors nuget 包但没有成功
• 仔细阅读我的代码，看不出我导出的方式有什么问题

Answer 1

检查您的应用程序二进制文件中是否有 System.Numerics.Vectors.dll 的更新版本