must be of type array, null given in array_keys DynamicEntityReferenceItem.php

Patch is created to fix the issue.

patch #3 is garbage however the merge request patch does work.

Basically fixes the issue as described.

Thanks @priti197

Here's a link to the MR patch file
https://git.drupalcode.org/project/dynamic_entity_reference/-/merge_requ...

I believe this resolves another problem I ran into: 🐛 TypeError: uasort(): Argument #1 ($array) must be of type array, null given in uasort() Active

patch #3 doesn't work for me.

Partialy work this code. Allow save configuration if select 2 bundles.

public static function getTargetTypes(array $settings) {
    $labels = \Drupal::service('entity_type.repository')->getEntityTypeLabels(TRUE);
    $options = array_filter(array_keys($labels[(string) t('Content', [], ['context' => 'Entity type group'])]), function ($entity_type_id) {
      return static::entityHasIntegerId($entity_type_id);
    });

    if (!empty($settings['entity_type_ids'])) {
      if (!empty($settings['exclude_entity_types'])) {
        return array_diff($options, $settings['entity_type_ids'] ?: ['default']);
      }
      else {
        return array_intersect($options, $settings['entity_type_ids'] ?: ['default']);
      }
    }
    else {
      return $options;
    }
  }

The changes in the merge request don't fully work for me. I still get this error on every odd click which selects an entity type.