L2SS-800: Avoid spurious errors

docker-compose/dsconfig/manage_object_properties.py

@@ -52,6 +52,7 @@ if __name__ == "__main__":
     # import
     if args.write:
         objects = json.load(sys.stdin)
+        if "objects" in objects:
             write_objects(objects["objects"])
 
     # export