Incompatible with Content moderation; Undefined method getEntity()

I have the same error when i use content_moderate with RNG module..

Fatal error: Call to undefined method Drupal\rng\Form\EventSettingsForm::getEntity() in C:\xampp\htdocs\drupal2\core\modules\content_moderation\src\Plugin\Field\FieldWidget\ModerationStateWidget.php on line 219

This is an issue with the paragraphs module as well. See issue 2848259.

When targeting a single paragraphs bundle with the ief widget, it mostly works (with bugs). However, if you are targeting an entity that has a paragraphs field, this error is triggered.

Same problem using workbench moderation

Faced with same issue when use options field.

Fixed it via patch. (for 1.3)

I am tryng to configure Moderation for my site. Drupal 8.4.2
I installed the various (latest) Workbench and Moderation Modules and found it wasn't fully configured.
In going through the helpful videos (Created for Drupal v7.x) I got to the stage where you enable moderation on the content type you are working with
While adding a moderation state for Posts:
I got to the screen:
Home/Administration/Structure/Content types/Post
-----------------------
Which has the following:
Enable moderation states.
Content of this type must transition through moderation states in order to be published.
Allowed moderation states (Unpublished)
- Archived
- Draft
- Needs Review
The allowed unpublished moderation states this content-type can be assigned.
Allowed moderation states (Published)
- Published
The allowed published moderation states this content-type can be assigned.
Default moderation state
- Draft
Select the moderation state for new content
[Save] Delete
----------------------------
I clicked on the "Save" Button
and this fatal error resulted:
Fatal error: Call to undefined method Drupal\content_moderation\Entity\Handler\NodeModerationHandler::onBundleModerationConfigurationFormSubmit() in /home/MYSITE/dev/site/modules/workbench_moderation/src/Form/BundleModerationConfigurationForm.php on line 184
Any thoughts?

Maybe the best next step here would be to have clear steps to reproduce.

I've just done this:
- Core 8.6.x-dev
- Enable -dev versions of: entity_browser, content_moderation, paragraphs, inline_entity_form, ctools, entity_browser_entity_form (and their dependencies)
- Create a paragraph type with a text field
- Add a paragraph field to the Page content type
- Create an EB with the following config: Modal, Tabs, No selection. Add a IEF widget to create nodes of type Page
- Add an entity reference field to Articles, pointing to Pages. Set its widget as EB, select the browser created before
- Enable both Articles and Pages as moderatable content
- Open the node Article form, then open the EB widget to create a Page. Save the page inside the modal.
- Boom

However, the error I get is a different one:

Drupal\Core\Entity\EntityStorageException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'langcode' cannot be null: INSERT INTO {paragraphs_item} (revision_id, type, uuid, langcode) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3); Array ( [:db_insert_placeholder_0] => [:db_insert_placeholder_1] => text [:db_insert_placeholder_2] => 22ee8d48-7a1b-4208-8158-ab40cda065a4 [:db_insert_placeholder_3] => ) in Drupal\Core\Entity\Sql\SqlContentEntityStorage->save() (line 850 of /var/www/html/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php).

Which makes me wonder if this may have been fixed in the latest versions, and the only remaining bug is #2901390: Integrity constraint violation: 1048 Column 'langcode' cannot be null, which is a paragraphs one?

Or maybe I'm testing it wrong? Let me know if that's the case.

Thanks!

Confirmed. I just reproduced the same error locally, which the paragraphs patch mentioned above fixes. It appears this issue has been resolved.

Great, thanks for testing @a-fro!

Closing this for now then, anyone please feel free to re-open if we have steps to reproduce.