Hi,
I have a strange problem. I try to launch demo:
ros2 launch rosbot_description navigation_demo_pro.launch.py
This starts normally, but eventually there is a lidar error shown in terminal:
[sync_slam_toolbox_node-11] [INFO] [1634914326.256366604] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.711 for reason 'Unknown'
This error continues. I try to stop and restart, but still same error. I paste full terminal output below for completeness.
Also, on some robots this error is intermittent, i.e. stopping and restarting sometimes we have no error. Then I can teleop the robot okay. Does anyone have a clue how to fix this error? Thank you.
husarion@cseerosbot7:~$ ros2 launch rosbot_description navigation_demo_pro.launch.py
[INFO] [launch]: All log files can be found below /home/husarion/.ros/log/2021-10-22-15-51-57-532919-cseerosbot7-2548
[INFO] [launch]: Default logging verbosity is set to INFO
/home/husarion/husarion_ws/install/rplidar_ros/share/rplidar_ros/launch/rplidar_a3.launch.py:7: UserWarning: The parameter 'node_executable' is deprecated, use 'executable' instead
Node(
/home/husarion/husarion_ws/install/rplidar_ros/share/rplidar_ros/launch/rplidar_a3.launch.py:7: UserWarning: The parameter 'node_name' is deprecated, use 'name' instead
Node(
[INFO] [rplidar_composition-1]: process started with pid [2552]
[INFO] [static_transform_publisher-2]: process started with pid [2554]
[INFO] [rosserial_node.py-3]: process started with pid [2557]
[INFO] [rosbot_tf-4]: process started with pid [2567]
[INFO] [controller_server-5]: process started with pid [2576]
[INFO] [planner_server-6]: process started with pid [2578]
[INFO] [recoveries_server-7]: process started with pid [2580]
[INFO] [bt_navigator-8]: process started with pid [2582]
[INFO] [waypoint_follower-9]: process started with pid [2584]
[INFO] [lifecycle_manager-10]: process started with pid [2586]
[INFO] [sync_slam_toolbox_node-11]: process started with pid [2588]
[rplidar_composition-1] 1634914319.296078 [57] rplidar_co: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[rplidar_composition-1] [INFO] [1634914319.354131831] [rplidar_composition]: RPLIDAR running on ROS 2 package rplidar_ros. SDK Version: '1.12.0'
[static_transform_publisher-2] 1634914319.348645 [57] static_tra: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[static_transform_publisher-2] [INFO] [1634914319.633893960] [static_transform_publisher_9hu2cmYCiRa4mtR8]: Spinning until killed publishing transform from 'base_link' to 'laser'
[rosbot_tf-4] 1634914319.629179 [57] rosbot_tf: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[waypoint_follower-9] 1634914319.788403 [57] waypoint_f: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[lifecycle_manager-10] 1634914319.784831 [57] lifecycle_: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[rplidar_composition-1] [INFO] [1634914319.859064980] [rplidar_composition]: RPLIDAR S/N: FE859AF2C1EA9FC0BEEB9CF371563200
[rplidar_composition-1] [INFO] [1634914319.859251868] [rplidar_composition]: Firmware Ver: 1.27
[rplidar_composition-1] [INFO] [1634914319.859314988] [rplidar_composition]: Hardware Rev: 6
[rplidar_composition-1] [INFO] [1634914319.860384778] [rplidar_composition]: RPLidar health status : '0'
[recoveries_server-7] 1634914319.871999 [57] recoveries: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[controller_server-5] 1634914319.875530 [57] controller: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[planner_server-6] 1634914319.884853 [57] planner_se: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[bt_navigator-8] 1634914320.019992 [57] bt_navigat: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[lifecycle_manager-10] [INFO] [1634914320.207807808] [lifecycle_manager_navigation]: Creating
[waypoint_follower-9] [INFO] [1634914320.361033478] [waypoint_follower]:
[waypoint_follower-9] waypoint_follower lifecycle node launched.
[waypoint_follower-9] Waiting on external lifecycle transitions to activate
[waypoint_follower-9] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[waypoint_follower-9] [INFO] [1634914320.361802588] [waypoint_follower]: Creating
[planner_server-6] [INFO] [1634914320.408123970] [planner_server]:
[planner_server-6] planner_server lifecycle node launched.
[planner_server-6] Waiting on external lifecycle transitions to activate
[planner_server-6] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[planner_server-6] [INFO] [1634914320.450261000] [planner_server]: Creating
[rplidar_composition-1] [INFO] [1634914320.483528912] [rplidar_composition]: current scan mode: Sensitivity, max_distance: 25.0 m, Point number: 15.9K , angle_compensate: 4, flip_x_axis 0
[controller_server-5] [INFO] [1634914320.521512914] [controller_server]:
[controller_server-5] controller_server lifecycle node launched.
[controller_server-5] Waiting on external lifecycle transitions to activate
[controller_server-5] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[bt_navigator-8] [INFO] [1634914320.621930546] [bt_navigator]:
[bt_navigator-8] bt_navigator lifecycle node launched.
[bt_navigator-8] Waiting on external lifecycle transitions to activate
[bt_navigator-8] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[bt_navigator-8] [INFO] [1634914320.622292871] [bt_navigator]: Creating
[lifecycle_manager-10] [INFO] [1634914320.660901218] [lifecycle_manager_navigation]: Creating and initializing lifecycle service clients
[recoveries_server-7] [INFO] [1634914320.696425788] [recoveries_server]:
[recoveries_server-7] recoveries_server lifecycle node launched.
[recoveries_server-7] Waiting on external lifecycle transitions to activate
[recoveries_server-7] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[controller_server-5] [INFO] [1634914320.786961371] [controller_server]: Creating controller server
[lifecycle_manager-10] [INFO] [1634914320.950343633] [lifecycle_manager_navigation]: Starting managed nodes bringup...
[lifecycle_manager-10] [INFO] [1634914320.950760817] [lifecycle_manager_navigation]: Configuring controller_server
[planner_server-6] [INFO] [1634914321.178046093] [global_costmap.global_costmap]:
[planner_server-6] global_costmap lifecycle node launched.
[planner_server-6] Waiting on external lifecycle transitions to activate
[planner_server-6] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[planner_server-6] [INFO] [1634914321.179665707] [global_costmap.global_costmap]: Creating Costmap
[controller_server-5] [INFO] [1634914321.582771600] [local_costmap.local_costmap]:
[controller_server-5] local_costmap lifecycle node launched.
[controller_server-5] Waiting on external lifecycle transitions to activate
[controller_server-5] See https://design.ros2.org/articles/node_lifecycle.html for more information.
[controller_server-5] [INFO] [1634914321.586073362] [local_costmap.local_costmap]: Creating Costmap
[sync_slam_toolbox_node-11] 1634914321.799690 [57] sync_slam_: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[sync_slam_toolbox_node-11] [INFO] [1634914322.479418770] [slam_toolbox]: Node using stack size 40000000
[controller_server-5] [INFO] [1634914322.522765003] [controller_server]: Configuring controller interface
[controller_server-5] [INFO] [1634914322.530905499] [controller_server]: Controller frequency set to 10.0000Hz
[controller_server-5] [INFO] [1634914322.531074400] [local_costmap.local_costmap]: Configuring
[controller_server-5] [INFO] [1634914322.654458917] [local_costmap.local_costmap]: Using plugin "voxel_layer"
[controller_server-5] [INFO] [1634914322.845752118] [local_costmap.local_costmap]: Subscribed to Topics: scan
[controller_server-5] [INFO] [1634914323.175203840] [local_costmap.local_costmap]: Initialized plugin "voxel_layer"
[controller_server-5] [INFO] [1634914323.175386440] [local_costmap.local_costmap]: Using plugin "inflation_layer"
[controller_server-5] [INFO] [1634914323.238755879] [local_costmap.local_costmap]: Initialized plugin "inflation_layer"
[controller_server-5] [INFO] [1634914323.427277419] [controller_server]: Created progress_checker : progress_checker of type nav2_controller::SimpleProgressChecker
[controller_server-5] [INFO] [1634914323.472168503] [controller_server]: Created goal_checker : goal_checker of type nav2_controller::SimpleGoalChecker
[controller_server-5] [INFO] [1634914323.678855782] [controller_server]: Created controller : FollowPath of type dwb_core::DWBLocalPlanner
[controller_server-5] [INFO] [1634914323.757788013] [controller_server]: Setting transform_tolerance to 1.000000
[controller_server-5] [INFO] [1634914324.248817019] [controller_server]: Using critic "RotateToGoal" (dwb_critics::RotateToGoalCritic)
[controller_server-5] [INFO] [1634914324.324277533] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.340325431] [controller_server]: Using critic "Oscillation" (dwb_critics::OscillationCritic)
[controller_server-5] [INFO] [1634914324.422137626] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.431308116] [controller_server]: Using critic "BaseObstacle" (dwb_critics::BaseObstacleCritic)
[controller_server-5] [INFO] [1634914324.441773655] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.448133723] [controller_server]: Using critic "GoalAlign" (dwb_critics::GoalAlignCritic)
[controller_server-5] [INFO] [1634914324.536855325] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.544562614] [controller_server]: Using critic "PathAlign" (dwb_critics::PathAlignCritic)
[sync_slam_toolbox_node-11] 1634914324.578413 [57] sync_slam_: using network interface wlx70f11c2e42d7 (udp/155.245.22.75) selected arbitrarily from: wlx70f11c2e42d7, docker0
[controller_server-5] [INFO] [1634914324.580301800] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.607460306] [controller_server]: Using critic "PathDist" (dwb_critics::PathDistCritic)
[controller_server-5] [INFO] [1634914324.676041800] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.703490949] [controller_server]: Using critic "GoalDist" (dwb_critics::GoalDistCritic)
[controller_server-5] [INFO] [1634914324.751697913] [controller_server]: Critic plugin initialized
[controller_server-5] [INFO] [1634914324.751875901] [controller_server]: Controller Server has FollowPath controllers available.
[lifecycle_manager-10] [INFO] [1634914324.931275796] [lifecycle_manager_navigation]: Configuring planner_server
[planner_server-6] [INFO] [1634914324.937105125] [planner_server]: Configuring
[planner_server-6] [INFO] [1634914324.937284988] [global_costmap.global_costmap]: Configuring
[planner_server-6] [INFO] [1634914325.103574247] [global_costmap.global_costmap]: Using plugin "static_layer"
[sync_slam_toolbox_node-11] [INFO] [1634914325.580831379] [slam_toolbox]: Using solver plugin solver_plugins::CeresSolver
[sync_slam_toolbox_node-11] [INFO] [1634914325.599947796] [slam_toolbox]: CeresSolver: Using SCHUR_JACOBI preconditioner.
[planner_server-6] [INFO] [1634914325.792451525] [global_costmap.global_costmap]: Subscribing to the map topic (/map) with transient local durability
[planner_server-6] [INFO] [1634914325.861050276] [global_costmap.global_costmap]: Initialized plugin "static_layer"
[planner_server-6] [INFO] [1634914325.861235076] [global_costmap.global_costmap]: Using plugin "obstacle_layer"
[planner_server-6] [INFO] [1634914325.892186903] [global_costmap.global_costmap]: Subscribed to Topics: scan
[sync_slam_toolbox_node-11] [INFO] [1634914326.163525797] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.624 for reason 'Unknown'
[planner_server-6] [INFO] [1634914326.224229666] [global_costmap.global_costmap]: Initialized plugin "obstacle_layer"
[planner_server-6] [INFO] [1634914326.225005138] [global_costmap.global_costmap]: Using plugin "inflation_layer"
[planner_server-6] [INFO] [1634914326.248473651] [global_costmap.global_costmap]: Initialized plugin "inflation_layer"
[sync_slam_toolbox_node-11] [INFO] [1634914326.256366604] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.711 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.257048621] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.867 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.257618920] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.881 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.262978557] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.890 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.265482425] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.969 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.270363795] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914325.980 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.271025988] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.053 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.278491120] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.061 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.279252869] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.140 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.318907911] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.147 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.406201056] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.318 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.429083283] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.405 for reason 'Unknown'
[planner_server-6] [INFO] [1634914326.463823983] [planner_server]: Created global planner plugin GridBased of type nav2_navfn_planner/NavfnPlanner
[planner_server-6] [INFO] [1634914326.468535564] [planner_server]: Configuring plugin GridBased of type NavfnPlanner
[sync_slam_toolbox_node-11] [INFO] [1634914326.498197495] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.428 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.514433585] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.497 for reason 'Unknown'
[planner_server-6] [INFO] [1634914326.577809673] [planner_server]: Planner Server has GridBased planners available.
[sync_slam_toolbox_node-11] [INFO] [1634914326.583770657] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.514 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.600718148] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.583 for reason 'Unknown'
[lifecycle_manager-10] [INFO] [1634914326.648053521] [lifecycle_manager_navigation]: Configuring recoveries_server
[recoveries_server-7] [INFO] [1634914326.649732695] [recoveries_server]: Configuring
[sync_slam_toolbox_node-11] [INFO] [1634914326.685570720] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.599 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.689186701] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.668 for reason 'Unknown'
[recoveries_server-7] [INFO] [1634914326.738672366] [recoveries_server]: Creating recovery plugin spin of type nav2_recoveries/Spin
[recoveries_server-7] [INFO] [1634914326.754070824] [recoveries_server]: Configuring spin
[sync_slam_toolbox_node-11] [INFO] [1634914326.756695209] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.680 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.815432711] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.755 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.848977117] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.808 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.877301913] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.847 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.936018016] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.876 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914326.944603248] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.934 for reason 'Unknown'
[recoveries_server-7] [INFO] [1634914327.005491554] [recoveries_server]: Creating recovery plugin backup of type nav2_recoveries/BackUp
[sync_slam_toolbox_node-11] [INFO] [1634914327.021614190] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914326.944 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.037928427] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.019 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.107271369] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.037 for reason 'Unknown'
[recoveries_server-7] [INFO] [1634914327.113345197] [recoveries_server]: Configuring backup
[sync_slam_toolbox_node-11] [INFO] [1634914327.128707459] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.106 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.198948167] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.128 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.209720039] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.197 for reason 'Unknown'
[recoveries_server-7] [INFO] [1634914327.261552614] [recoveries_server]: Creating recovery plugin wait of type nav2_recoveries/Wait
[sync_slam_toolbox_node-11] [INFO] [1634914327.286697541] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.208 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.292625454] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.282 for reason 'Unknown'
[recoveries_server-7] [INFO] [1634914327.296389687] [recoveries_server]: Configuring wait
[sync_slam_toolbox_node-11] [INFO] [1634914327.370738329] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.290 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.387638401] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.368 for reason 'Unknown'
[lifecycle_manager-10] [INFO] [1634914327.389477414] [lifecycle_manager_navigation]: Configuring bt_navigator
[bt_navigator-8] [INFO] [1634914327.390983437] [bt_navigator]: Configuring
[sync_slam_toolbox_node-11] [INFO] [1634914327.454914958] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.386 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.462012716] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.454 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.550795809] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.460 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.572037174] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.547 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.633287101] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.570 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.639851471] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.632 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.736118495] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.638 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.894015746] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.728 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.938926339] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.745 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.939917059] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.822 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.958000963] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.861 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.994677937] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.929 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914327.995618161] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.915 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914328.054782248] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914327.983 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914328.094121871] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914328.054 for reason 'Unknown'
[sync_slam_toolbox_node-11] [INFO] [1634914328.096200143] [slam_toolbox]: Message Filter dropping message: frame 'laser' at time 1634914328.082 for reason 'Unknown'