diff --git a/Classes/Controller/BackendServiceController.php b/Classes/Controller/BackendServiceController.php
index 816eab2273..adc388d582 100644
--- a/Classes/Controller/BackendServiceController.php
+++ b/Classes/Controller/BackendServiceController.php
@@ -585,7 +585,7 @@ public function flowQueryAction(array $chain): string
         }
 
         /** @see GetOperation */
-        assert(is_callable([$flowQuery, 'get']));
+        assert(is_object($flowQuery) && is_callable([$flowQuery, 'get']));
 
         $nodeInfoHelper = new NodeInfoHelper();
         $type = $finisher['type'] ?? null;
diff --git a/Classes/Fusion/Helper/NodeInfoHelper.php b/Classes/Fusion/Helper/NodeInfoHelper.php
index daaf228364..3e5278c1bc 100644
--- a/Classes/Fusion/Helper/NodeInfoHelper.php
+++ b/Classes/Fusion/Helper/NodeInfoHelper.php
@@ -350,7 +350,10 @@ public function uri(Node|NodeAddress $nodeAddress, ActionRequest $actionRequest)
             $nodeAddressFactory = NodeAddressFactory::create($contentRepository);
             $nodeAddress = $nodeAddressFactory->createFromNode($nodeAddress);
         }
-        return (string)NodeUriBuilder::fromRequest($actionRequest)->uriFor($nodeAddress);
+        $uriBuilder = new UriBuilder();
+        $uriBuilder->setRequest($actionRequest);
+        $uriBuilder->setCreateAbsoluteUri(true);
+        return (string)NodeUriBuilder::fromUriBuilder($uriBuilder)->uriFor($nodeAddress);
     }
 
     public function previewUri(Node $node, ActionRequest $actionRequest): string