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user:~/ros2_ws$ ros2 run ros2_callback_visualiser analise_trace_calback_function.py converting trace directory: /home/user/.ros/tracing/callback_function converted 558 events in 41 ms output written to: /home/user/.ros/tracing/callback_function/converted [99%] [Ros2Handler] CALLBACK SYMBOLS ================ {94254594816168: 'rclcpp::TimeSource::NodeState::attachNode(std::shared_ptrrclcpp::node_interfaces::NodeBaseInterface,std::shared_ptrrclcpp::node_interfaces::NodeTopicsInterface,std::shared_ptrrclcpp::node_interfaces::NodeGraphInterface,std::shared_ptrrclcpp::node_interfaces::NodeServicesInterface,std::shared_ptrrclcpp::node_interfaces::NodeLoggingInterface,std::shared_ptrrclcpp::node_interfaces::NodeClockInterface,std::shared_ptrrclcpp::node_interfaces::NodeParametersInterface)::{lambda(std::shared_ptr<rcl_interfaces::msg::ParameterEventconst>)#1}', 94254594958320: 'void (RobotStatus::?)()', 94254594958624: 'void (RobotStatus::?)()'} Traceback (most recent call last): File "/home/simulations/ros2_sims_ws/install/ros2_callback_visualiser/lib/ros2_callback_visualiser/analise_trace_calback_function.py", line 137, in ranges_timer_counter = get_timer_callback_ranges('robot_status', 'timer_counter') File "/home/simulations/ros2_sims_ws/install/ros2_callback_visualiser/lib/ros2_callback_visualiser/analise_trace_calback_function.py", line 65, in get_timer_callback_ranges assert 1 == len(timer_objs), f'len={len(timer_objs)}' AssertionError: len=0 [ros2run]: Process exited with failure 1