Argument #2 ($label) must be of type ?Drupal\Core\StringTranslation\TranslatableMarkup

Created an MR and attaching the patch file also.
Moving it to Needs Review state.

https://git.drupalcode.org/project/webform_entity_reference_exclude/-/me...

HI
I have tested MR on Drupal 11.x
The MR is applied successfully...

Issue is facing for add/edit the content page
with patch issue is resolved; able to add and edit the page

Attaching SS for reference

Thanks for the bug report, MR and review! Merging now.