There is a warning error when editing a User entity reference field:
Warning: Undefined array key "base_plugin_label"
Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem->fieldSettingsForm() (line 404 of /html/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php)
Install latest version of Open Social (at the moment 12.0.5).
Edit any User entity reference field, for example here:
/admin/structure/types/manage/event/fields/node.event.field_event_managers
The Undefined array key "base_plugin_label" Error shows on watchdog.
Patch attached based on similar bug:
https://www.drupal.org/node/3414702 →
https://www.drupal.org/files/issues/2024-01-26/dynamic_entity_reference-... →
The error disappears with the patch.
UPDATE: I have found an old issue with the same problem which was closed (outdated):
https://www.drupal.org/project/social/issues/3094529 →
The solution seems to be to add the base_plugin_label into the plugin definition. While that issue is not solved, this patch works as a temporary solution to make the warnings disappear.
Solve old issue:
https://www.drupal.org/project/social/issues/3094529 →
Meanwhile patch #1 eliminates the warnings.
Patch #1: core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
Closed: duplicate
12.0
Code (back-end)
It also happens with paragraphs. Same solution applied on DynamicEntityReferenceItem.php. Patch attached.
Issue is very similar, I guess to generate a new Issue is not needed.