/home/firmament/codes/24navigation/src/linefit_ground_segementation_ros2/linefit_ground_segmentation_ros/src/ground_segmentation_node.cc: In constructor ‘SegmentationNode::SegmentationNode(const rclcpp::NodeOptions&)’:
/home/firmament/codes/24navigation/src/linefit_ground_segementation_ros2/linefit_ground_segmentation_ros/src/ground_segmentation_node.cc:94:3: error: ‘flipped_pub_’ was not declared in this scope
   94 |   flipped_pub_ = this->create_publisher<sensor_msgs::msg::PointCloud2>(
      |   ^~~~~~~~~~~~
/home/firmament/codes/24navigation/src/linefit_ground_segementation_ros2/linefit_ground_segmentation_ros/src/ground_segmentation_node.cc:95:3: error: ‘flipped_output_topic’ was not declared in this scope; did you mean ‘flipped_topic’?
   95 |   flipped_output_topic,qos,optionsqos);
      |   ^~~~~~~~~~~~~~~~~~~~
      |   flipped_topic
/home/firmament/codes/24navigation/src/linefit_ground_segementation_ros2/linefit_ground_segmentation_ros/src/ground_segmentation_node.cc: In member function ‘void SegmentationNode::scanCallback(sensor_msgs::msg::PointCloud2_<std::allocator<void> >::SharedPtr)’:
/home/firmament/codes/24navigation/src/linefit_ground_segementation_ros2/linefit_ground_segmentation_ros/src/ground_segmentation_node.cc:123:3: error: ‘flipped_pub_’ was not declared in this scope; did you mean ‘flipped_msg’?
  123 |   flipped_pub_->publish(*flipped_msg);
      |   ^~~~~~~~~~~~
      |   flipped_msg
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gmake[1]: *** [CMakeFiles/Makefile2:140: CMakeFiles/ground_segmentation_node.dir/all] Error 2
gmake: *** [Makefile:146: all] Error 2