The class required for this tool, 'rviz_plugins/Goal3DTool', could not be loaded.
Error:
According to the loaded plugin descriptions the class rviz_plugins/Goal3DTool with base class type rviz::Tool does not exist. Declared types are rviz/FocusCamera rviz/Interact rviz/Measure rviz/MoveCamera rviz/PublishPoint rviz/Select rviz/SetGoal rviz/SetInitialPose rviz_plugin_tutorials/PlantFlag rviz_visual_tools/KeyTool

求解答：初学者一枚，在ros下尝试写了a*的算法，终端显示算法跑出来的长度和时间，但是rviz没有显示我的路径