system_error_monitor should have less "ERROR" messages

[felixf4xu]

These are some error messages during my planning-simulation, if a system has so many errors, there might be serious problems.

[system_error_monitor-16] [ERROR] [1700965291.544590469] [system_error_monitor /autoware/control/autonomous_driving/node_alive_monitoring]: [Single Point Fault]: Error
[system_error_monitor-16] [ERROR] [1700965291.544624346] [system_error_monitor /autoware/control/autonomous_driving/node_alive_monitoring/topic_status/topic_state_monitor_control_command_control_cmd: control_topic_status]: [Single Point Fault]: Error
[system_error_monitor-16] [ERROR] [1700965291.544634743] [system_error_monitor /autoware/control/autonomous_driving/node_alive_monitoring/topic_status/topic_state_monitor_trajectory_follower_control_cmd: control_topic_status]: [Single Point Fault]: Error
[system_error_monitor-16] [ERROR] [1700965291.544642016] [system_error_monitor /autoware/planning/node_alive_monitoring]: [Single Point Fault]: Error
[system_error_monitor-16] [ERROR] [1700965291.544649370] [system_error_monitor /autoware/planning/node_alive_monitoring/topic_status/topic_state_monitor_mission_planning_route: planning_topic_status]: [Single Point Fault]: OK
[system_error_monitor-16] [ERROR] [1700965291.544656283] [system_error_monitor /autoware/planning/node_alive_monitoring/topic_status/topic_state_monitor_scenario_planning_trajectory: planning_topic_status]: [Single Point Fault]: Error
[system_error_monitor-16] [ERROR] [1700965291.544663005] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation]: [Single Point Fault]: Error
[system_error_monitor-16] [ERROR] [1700965291.544670499] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_acceleration/planning_validator: trajectory_validation_acceleration]: [Single Point Fault]: acceleration is too large
[system_error_monitor-16] [ERROR] [1700965291.544680279] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_curvature/planning_validator: trajectory_validation_curvature]: [Single Point Fault]: curvature is too large
[system_error_monitor-16] [ERROR] [1700965291.544687866] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_deceleration/planning_validator: trajectory_validation_deceleration]: [Single Point Fault]: deceleration is too large
[system_error_monitor-16] [ERROR] [1700965291.544731837] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_finite/planning_validator: trajectory_validation_finite]: [Single Point Fault]: infinite value is found
[system_error_monitor-16] [ERROR] [1700965291.544741977] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_interval/planning_validator: trajectory_validation_interval]: [Single Point Fault]: points interval is too long
[system_error_monitor-16] [ERROR] [1700965291.544748662] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_lateral_acceleration/planning_validator: trajectory_validation_lateral_acceleration]: [Single Point Fault]: lateral acceleration is too large
[system_error_monitor-16] [ERROR] [1700965291.544755354] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_relative_angle/planning_validator: trajectory_validation_relative_angle]: [Single Point Fault]: relative angle is too large
[system_error_monitor-16] [ERROR] [1700965291.544762738] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_steering/planning_validator: trajectory_validation_steering]: [Single Point Fault]: expected steering is too large
[system_error_monitor-16] [ERROR] [1700965291.544769052] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_steering/planning_validator: trajectory_validation_steering_rate]: [Single Point Fault]: expected steering rate is too large
[system_error_monitor-16] [ERROR] [1700965291.544786409] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_steering_rate/planning_validator: trajectory_validation_steering_rate]: [Single Point Fault]: expected steering rate is too large
[system_error_monitor-16] [ERROR] [1700965291.544792889] [system_error_monitor /autoware/planning/performance_monitoring/trajectory_validation/trajectory_validation_velocity_deviation/planning_validator: trajectory_validation_velocity_deviation]: [Single Point Fault]: velocity deviation is too large

I did nothing but continue to set the current vehicle pose, and the goal potions, then the system continues to run, without any problem.

This is strange to me as to the ERROR design:

When there is an ERROR, something needed to be done before the system can continue to run.

If the system can run without any error correction operations, should they be just INFO?

[felixf4xu]

There is at least one very obvious false ERROR:

[system_error_monitor-16] [ERROR] [1700965291.544649370] [system_error_monitor
/autoware/planning/node_alive_monitoring/topic_status/topic_state_monitor_mission_planning_route: planning_topic_status]: [Single Point Fault]: OK

There is an error but the error message is OK? It's very confusing.