diff -u b/core/modules/migrate_drupal/src/Plugin/migrate/EntityReferenceTranslationDeriver.php b/core/modules/migrate_drupal/src/Plugin/migrate/EntityReferenceTranslationDeriver.php
--- b/core/modules/migrate_drupal/src/Plugin/migrate/EntityReferenceTranslationDeriver.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/EntityReferenceTranslationDeriver.php
@@ -186,6 +186,7 @@
         }
       }
     }
+    return $this->derivatives;
   }
 
 }