It looks like the bridge is not listed in the turtlebot instructions. please run `sudo apt install ros-r2b2-ros1-bridge` to install the bridge --- [Visit Topic](https://discourse.ros.org/t/cartographer-and-navigation-workable-in-beta2/2074/11) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: