diff -Naur ros-humble-nav2-smoother-1.1.9_org/src/nav2_smoother.cpp ros-humble-nav2-smoother-1.1.9/src/nav2_smoother.cpp
--- ros-humble-nav2-smoother-1.1.9_org/src/nav2_smoother.cpp	2023-09-11 15:08:56.479491453 +0800
+++ ros-humble-nav2-smoother-1.1.9/src/nav2_smoother.cpp	2023-09-11 16:37:14.361099966 +0800
@@ -85,7 +85,7 @@
   transform_listener_ = std::make_shared<tf2_ros::TransformListener>(*tf_);
 
   std::string costmap_topic, footprint_topic, robot_base_frame;
-  double transform_tolerance;
+  double transform_tolerance = 0.0;
   this->get_parameter("costmap_topic", costmap_topic);
   this->get_parameter("footprint_topic", footprint_topic);
   this->get_parameter("transform_tolerance", transform_tolerance);