HTTP error 404.0 - not found when attempting to download file

HTTP Error 404.0 - Not Found
The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Module	   IIS Web Core
Notification	   MapRequestHandler
Handler	   StaticFile
Error Code	   0x80070002

Requested URL	   http://localhost:8071/FileProcess/Download/C:/Users/tshumae/source/repos/MySolution/MyProject/Downloads/log4net-cheat-sheet.pdf
Physical Path	   C:\Users\tshumae\source\repos\MySolution\MyProject\FileProcess\Downloads\C:\Users\tshumae\source\repos\PureFlexGateway\MIHR_SYSTEM\Downloads\log4net-cheat-sheet.pdf

<pre>  public List<DownLoadFileInformation> GetBatches()
        {
            List<DownLoadFileInformation> lstFiles = new List<DownLoadFileInformation>();
       
            string realPath = @"C:\Users\tshumae\source\repos\MySolution\MyProject\Downloads";
            IEnumerable<string> fileList = Directory.EnumerateFiles(realPath);

            if (System.IO.Directory.Exists(realPath))
            {
                int i = 0;
                foreach (string file in fileList)
                {
                    FileInfo f = new FileInfo(file);
                    string separator = "\\";
                    var sep = separator.ToString();
                    StringBuilder sb = new StringBuilder(realPath);
                    var filepath = sb.Append(sep);
                    lstFiles.Add(new DownLoadFileInformation()
                    {  
                        FileId = i + 1,
                        FileName = Path.GetFileName(file),
                        FileSize = f.Length,                    
                        FilePath = filepath + Path.GetFileName(file),
                    });
                    i = i + 1;
                }              
            }

            return lstFiles.ToList();
        }

public ActionResult Index()
       {
           var filesCollection = obj.GetBatches();
           return View(filesCollection);
       }

public FileResult Download(string URL)
      {
          //int CurrentFileID = Convert.ToInt32(FileID);

          string CurrentFileUrl = Convert.ToString(URL);
          var filesCol = obj.GetBatches();

          string CurrentFileUrll = (from fls in filesCol
                                    where fls.FilePath == CurrentFileUrl
                                    select fls.FilePath).FirstOrDefault();
          byte[] fileBytes = System.IO.File.ReadAllBytes(CurrentFileUrll);

          string CurrentFileName = (from fls in filesCol
                                    where fls.FilePath == CurrentFileUrl
                                    select fls.FileName).FirstOrDefault();

          string contentType = string.Empty;
          if (CurrentFileName.Contains(".pdf"))
          {
              contentType = "application/pdf";
          }

          else if (CurrentFileName.Contains(".docx"))
          {
              contentType = "application/docx";
          }
          return File(fileBytes, contentType,CurrentFileName);
      }

<pre> <td>
            @Html.ActionLink("Download", "Download", new { id = item.FilePath })
        </td>