Fixed #13622

brandonkelly · brandonkelly · commit b9d8ec55bc7c · 2023-09-05T14:35:45.000-07:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Fixed a bug where changed fields weren’t being tracked properly when applying a draft for a multi-site entry.
 - `craft\services\Elements::duplicateElement()` now supports passing a `siteAttributes` array to the `$attributes` argument, for setting site-specific attributes.
+- Fixed an error that could occur when executing a GraphQL query with fragments. ([#13622](https://github.com/craftcms/cms/issues/13622))
 
 ## 4.5.3 - 2023-08-29
 
diff --git a/src/services/Gql.php b/src/services/Gql.php
@@ -497,7 +497,7 @@ public function executeQuery(
                 $event->result = $cachedResult;
             } else {
                 $isIntrospectionQuery = StringHelper::containsAny($event->query, ['__schema', '__type']);
-                $schemaDef = $this->getSchemaDef($schema, $debugMode || $isIntrospectionQuery);
+                $schemaDef = $this->getSchemaDef($schema, true);
                 $elementsService = Craft::$app->getElements();
                 $elementsService->startCollectingCacheInfo();
 
