When adding an user entity reference field with the option to filter by role, I'm getting the following error under certain circumstances.
PHP message: PHP Warning: foreach() argument must be of type array|object, null given in core/lib/Drupal/Core/Render/Element/Checkboxes.php on line 113
I haven't been able to reproduce it on a vanilla install yet :) I believe it has to do with saving the form with partial config or switching between a "Default" and "Views" reference method on the form. It is impacting the field configuration form as well as the views filter form.
Set the default configuration value to an empty array instead of null.
Determine how to reproduce and decide if default value should be an empty array.
Needs work
11.0 🔥
Last updated
The change is currently missing an automated test that fails when run with the original code, and succeeds when the bug has been fixed.
Facing same issue and the proposed change fixes the issue.