when I run the launch file navigation_demo_sim.launch.py I can not navigate the rosbot in rviz2.
I get the following message in Rviz2:
The class required for this panel, ‘nav2_rviz_plugins/Navigation 2’, could not be loaded.
According to the loaded plugin descriptions the class nav2_rviz_plugins/Navigation 2 with base class type rviz_common::Panel does not exist. Declared types are rviz_visual_tools/RvizVisualToolsGui slam_toolbox::SlamToolboxPlugin
Can you help?