我发现了许多类似的问题，但我无法解决这个问题，因此张贴了一个新的。

我开发了具有登录/注册功能的dotnet核心web应用程序。在编辑配置文件部分，有一个功能，用户可以更新他的配置文件图片。这在当地很管用。当我将它部署到服务器上时，我会得到下面提到的错误。

供您参考的代码

        private Dictionary<string, string> UploadProfilePic(EditUserProfilePicViewModel model)
    {
        string uniqueFileName = null;
        Dictionary<string, string> imageNamesMap = new Dictionary<string, string>();

        string contentRoot = config.GetValue<string>(WebHostDefaults.ContentRootKey);
        string tempFolder = contentRoot + "\\wwwroot\\images\\temp";
        string uploadFolder = contentRoot + "\\wwwroot\\images\\profilepics";

        if (model.ProfileImage != null)
        {
            try
            {
                string[] fileNameArray = model.ProfileImage.FileName.ToString().Split('.');
                string fileExtension = fileNameArray[fileNameArray.Length - 1];
                uniqueFileName = model.ProfileId.ToString() + '-' + model.ProfileUrl + "." + fileExtension;

                //store image in the temp folder
                string filePath = Path.Combine(tempFolder, uniqueFileName);

                using (var fileStream = new FileStream(filePath, FileMode.Create))
                {
                    model.ProfileImage.CopyTo(fileStream);
                }

                using (Image sourceImage = Image.FromFile(filePath))
                {
                    if (sourceImage != null)
                    {
                        try
                        {
                            //resize to 300px and store in profilepics folder
                            using (Image destinationImage = ResizeImage(sourceImage, 300, 300))
                            {
                                uniqueFileName = model.ProfileId.ToString() + '-' + model.ProfileUrl + "-300." + fileExtension;
                                imageNamesMap.Add("LargeImage", uniqueFileName);
                                string fileSavePath = Path.Combine(uploadFolder, uniqueFileName);
                                destinationImage.Save(fileSavePath, ImageFormat.Jpeg);
                            }

                            //resize to 75px and store in profilepics folder
                            using (Image destinationImage = ResizeImage(sourceImage, 75, 75))
                            {
                                uniqueFileName = model.ProfileId.ToString() + '-' + model.ProfileUrl + "-75." + fileExtension;
                                imageNamesMap.Add("SmallImage", uniqueFileName);
                                string fileSavePath = Path.Combine(uploadFolder, uniqueFileName);
                                destinationImage.Save(fileSavePath, ImageFormat.Jpeg);
                            }
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine(ex.Message);
                        }
                    }
                }
                DeleteFilesFromDir(tempFolder);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
        return imageNamesMap;
    }

你能帮我拿这个吗？