Merge pull request #164 from ConductionNL/fix/OP-450/directory-service

Fix for adding Directory (2)

lib/Service/DirectoryService.php

@@ -297,7 +297,7 @@ public function updateListing(array $newListing, array $oldListing): array{
 		// Do not update version, because we copy the version from the source
 		$newListing = $this->objectService->saveObject('listing', $oldListing, false);
 
-		return $newListing->jsonSerialize();
+		return $newListing instanceof Listing === true ? $newListing->jsonSerialize() : $newListing;
 	}
 
 	/**