Pricing
00
In productionProintermediateVersion drift

The AI used Humble-era syntax on Jazzy

Update the deprecated call to the Jazzy API.

Pairs with Grounding AI in the real ROS 2 docs in Use AI efficiently with ROS 2. Read the concept first, then diagnose it here.

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Operator report

The node fails to construct the publisher with a positional-args error.

Ubuntu 24.04, ROS 2 Jazzy, rclpy/rclcpp, an LLM coding assistant + MCP

01

System boundary

Trace only the relevant path.

3 nodes
  1. 01LLM code→
  2. 02Jazzy API→
  3. 03constructionOUT
02

How this lab works

You diagnose it. No command list.

Open the repair workspace and gather your own evidence in a real terminal. No diagnostic commands are handed to you - finding the fault is the exercise. Stuck? Progressive hints unlock inside the workspace.

03

Verification

Pass more than the visible symptom.

4 checks
  • Jazzy signature used
  • Publisher constructs
  • Hidden regression behavior
  • Root cause explanation