diff -u b/src/Controller/FieldablePathController.php b/src/Controller/FieldablePathController.php
--- b/src/Controller/FieldablePathController.php
+++ b/src/Controller/FieldablePathController.php
@@ -74,7 +74,7 @@
     // Load entity from the path source.
     $param_keys = array_keys($params);
     $entity_type = array_pop($param_keys);
-    $entity = \Drupal::entityTypeManager()
+    $entity = $this->entityTypeManager()
       ->getStorage($entity_type)
       ->load($params[$entity_type]);