Issue #3294162 by papa ours, jlicht: Errors on search-only for paragraphs library

Closes #3294162

src/Plugin/Scanner/Paragraph.php

@@ -54,6 +54,9 @@ class Paragraph extends Entity {
             $parentEntity = $paragraph->getParentEntity();
 
             if (!empty($parentEntity)) {
+              if (!method_exists($parentEntity, 'getParentEntity')) {
+                continue;
+              }
               $parentEntityType = $parentEntity->getEntityTypeId();
               // In the case of nested relationships we need to find the base
               // entity.