运行代码报错，提示未能加载文件或程序集

普通模式和v2都会报错

引用dll库：

C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.7.2\System.Drawing.dll
D:\Files\重要\C#\ConsoleApp3\packages\PdfiumViewer.2.13.0.0\lib\net20\PdfiumViewer.dll
D:\Files\重要\C#\ConsoleApp3\packages\PdfiumViewer.Native.x86_64.v8-xfa.2018.4.8.256\Build\x64\pdfium.dll

using System.Drawing.Printing;
using PdfiumViewer;

public class Program
{
    public static void Main(string[] args)
    {
        string pdfPath = @"qw.pdf"; // 获取 PDF 文件路径

        PrintPdf(pdfPath);
    }

    private static void PrintPdf(string pdfPath)
    {
        // 加载 PDF 文档  
        using (var document = PdfDocument.Load(pdfPath))
        {
            // 创建打印文档  
            using (var printDocument = document.CreatePrintDocument())
            {
                //获取 PDF 文件的页数  
                int PageNum = document.PageCount;

                //设置提示窗内容  
                printDocument.DocumentName = "正在打印 共 " + PageNum + " 页";

                // 设置打印器为默认打印器  
                printDocument.PrinterSettings.PrinterName = new PrinterSettings().PrinterName;

                // 打印文档  
                printDocument.Print();
            }
        }
    }
}