image upload max size gave double errors

fixing the amsterdam sprint tag to amsterdam2014

Confirmed - though this was related to #2358409: image_image field element is processed 2 times but it's not

Error shows twice because of the duplicate id generated template_preprocess_file_widget, template_preprocess_file_widget_multiple.

Added a patch to fix this issue.

I've tested the patch provided by Vj in the comment #3 and it fixes the double error.

There's commented code in this patch. Please fix that.

Removed commented lines. Let me know if any other changes need to be done.

+++ b/core/modules/file/file.field.inc
@@ -27,6 +27,7 @@ function template_preprocess_file_widget(&$variables) {
+  unset($element['#prefix'], $element['#suffix']);

@@ -43,6 +44,7 @@ function template_preprocess_file_widget(&$variables) {
+  unset($element['#prefix'], $element['#suffix']);

I doubt this is the correct solution. Or at least, this'd be one of the weirdest bugfixes I've ever seen :)

Can you explain why this solves the problem, and why you think this is the correct solution?

File field has id (edit-field-image-ajax-wrapper) twice. This is the reason its showing double errors. So removed id by unset prefix and suffix.

I am first time trying to use drupal 8 so just wanted to contribute to fix issue :)

@Wim can you please guide me to correct solution ???

Patch applied successfully, But the double error still exists when we try to upload wrong file format image.please find attached screen shot.

This almost sounds like the AJAX system is subtly broken?

After bit debugging found \drupal\core\lib\Drupal\Core\Render\Renderer.php::doRender function called twice.

Added a if condition for render_children and issue fixed.

This looks like a duplicate of #2346893: Duplicate AJAX wrapper around a file field

Needs reroll, and is this really a duplicate?

patch Re-rolled.

Looks like this issue is fixed elsewhere in the code, without applying the given patch I tested it with a latest code pull. I do not see double errors. screenshot attached. Removed Needs Reroll Tag

+RTBC

Dont know why tests failed..

Tested the patch from #2346893-98: Duplicate AJAX wrapper around a file field and it fixes the problem reported here, so marking this one as a duplicate.