diff -u b/core/modules/tracker/src/Controller/TrackerBase.php b/core/modules/tracker/src/Controller/TrackerBase.php
--- b/core/modules/tracker/src/Controller/TrackerBase.php
+++ b/core/modules/tracker/src/Controller/TrackerBase.php
@@ -113,6 +113,7 @@
     $rows = [];
     if (!empty($tracker_data)) {
       // Load nodes into an array with the same order as $tracker_data.
+      /** @var \Drupal\node\NodeInterface[] $nodes */
       $nodes = Node::loadMultiple(array_keys($tracker_data));
 
       // Enrich the node data.