fix: error message hasn't been shown when user doesn't have permissions to download a file but tries to do so.

Fix another regression after c2a1c00 commit.

Author: php-coder

src/main/java/ru/mystamps/web/feature/series/SeriesController.java

@@ -568,7 +568,7 @@ public static void loadErrorsFromDownloadInterceptor(
 					// didn't specify a file but somehow provide a URL to an image. In this case,
 					// let's show an error message that file is required.
 					result.rejectValue(
-						"image",
+						DownloadImageInterceptor.UPLOADED_IMAGE_FIELD_NAME,
 						"ru.mystamps.web.support.beanvalidation.NotEmptyFilename.message"
 					);
 					form.nullifyImageUrl();