Can't save facet config

So I tested on 2.x and 3.x both and was not able to reproduce this error.

If still seeing on the latest version please reopen.

Same problem here, with facet 3.0.0-beta1, search_api_solr 4.3.3 and drupal 10.2.6. Unable to save the form at admin/config/search/facets, getting wsod with the message above

Begging of the debug trace:
Drupal\facets\FacetListBuilder->submitForm()
call_user_func_array() (Line: 129)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers() (Line: 67)
Drupal\Core\Form\FormSubmitter->doSubmitForm() (Line: 597)
Drupal\Core\Form\FormBuilder->processForm() (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 224)
Drupal\Core\Form\FormBuilder->getForm() (Line: 94)
Drupal\Core\Config\Entity\DraggableListBuilder->render() (Line: 23)
Drupal\Core\Entity\Controller\EntityListController->listing()
call_user_func_array() (Line: 123)

There are two sources relying to View Solr Search (page, and block), there is not so much to configure a part the Filter key. Fields are present by default in solr index but I see no way to add a facet block in block layer.

Error happens when no facets exist yet.

Automatically closed - issue fixed for 2 weeks with no activity.