only in patch2:
unchanged:
--- a/core/lib/Drupal/Core/Entity/EntityStorageBase.php
+++ b/core/lib/Drupal/Core/Entity/EntityStorageBase.php
@@ -209,7 +209,7 @@ protected function doCreate(array $values) {
    * {@inheritdoc}
    */
   public function load($id) {
-    $entities = $this->loadMultiple(array($id));
+    $entities = $id ? $this->loadMultiple(array($id)) : [];
     return isset($entities[$id]) ? $entities[$id] : NULL;
   }
 
only in patch2:
unchanged:
--- a/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
+++ b/core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
@@ -569,9 +569,11 @@ protected function loadFromSharedTables(array &$values, array &$translations) {
   protected function doLoadRevisionFieldItems($revision_id) {
     $revision = NULL;
 
-    // Build and execute the query.
-    $query_result = $this->buildQuery(array(), $revision_id)->execute();
-    $records = $query_result->fetchAllAssoc($this->idKey);
+    if ($revision_id) {
+      // Build and execute the query.
+      $query_result = $this->buildQuery(array(), $revision_id)->execute();
+      $records = $query_result->fetchAllAssoc($this->idKey);
+    }
 
     if (!empty($records)) {
       // Convert the raw records to entity objects.