Resolve #3424109 "Reference only taxonomy"

Closes #3424109

src/Form/NodeSelectTerms.php

@@ -115,6 +115,10 @@ class NodeSelectTerms extends ConfirmFormBase {
             $field_info = $field->getFieldStorageDefinition();
             $field_settings = $field->getSettings();
             $target_bundles = $field_settings['handler_settings']['target_bundles'];
+            
+            if ($field_settings['target_type'] !== 'taxonomy_term') {
+              continue;
+            }
 
             $auto_create = (!empty($field->getSettings()['handler_settings']['auto_create'])) ?
               $field->getSettings()['handler_settings']['auto_create'] :