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troubleshooting

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Common ComfyUI errors and fixes. OOM, missing nodes, dtype mismatches, black images, and debugging strategies

plugin/skills/troubleshooting/SKILL.md

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# ComfyUI Troubleshooting Guide

> Render completes but looks WRONG (artifacts, wrong subject/pose/color, a
> ControlNet/mask/LoRA not taking, a refiner degrading it)? That's not an error.
> Use the debug-render skill (`list_packs` with `action: "skill_read"`,
> `name: "debug-render"`) to localize the bad stage with run-to-node
> (`panel_run` `to_node_id`) by previewing intermediate steps. This guide is for
> runs that fail with an error, OOM, or missing node.

## Error Diagnosis Strategy

When a workflow fails, follow this approach:

1. Get the error. Use `get_history(action="diagnose")` to retrieve the execution result with the full traceback, plus any missing models/nodes
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