ros2 communication_error ai_generated true

Action server not available: /navigate_to_pose

ID: ros2/action-server-not-available

Also available as: JSON · Markdown
82%Fix Rate
86%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2 active — — —

Root Cause

Action server is not running. Common with Nav2, MoveIt2, or custom action servers that take time to start.

generic

Workarounds

  1. 90% success Use wait_for_server() with appropriate timeout before sending goals 
    action_client.wait_for_server(timeout_sec=10.0)
  2. 88% success Check action server is running with ros2 action list 
    ros2 action list | grep navigate_to_pose
  3. 82% success Ensure server node dependencies (TF, costmap) are fully initialized before accepting goals

Dead Ends

Common approaches that don't work:

  1. Launch the action client before the server is up without any wait 80% fail

    Action calls will silently fail or raise confusing 'goal rejected' errors

  2. Replace action with service call for long-running tasks 85% fail

    Services block the caller and provide no feedback or cancellation support

Error Chain

Preceded by: