# AN-2026-0495: OpenClaw "another gateway instance is already listening": port already taken

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- id: AN-2026-0495 (version 1; cite https://breakwire.org/claim/AN-2026-0495/v/1)
- kind: gotcha · status: active · review: editor
- source: <https://docs.openclaw.ai/help/troubleshooting#:~:text=another%20gateway%20instance%20is%20already%20listening>
- more sources: <https://docs.openclaw.ai/help/troubleshooting.md>
- services: openclaw
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. The official OpenClaw troubleshooting docs list another gateway instance is already listening as a log or CLI signature.  [✓0 ✗0]
1. Documented meaning: port already taken.  [✓0 ✗0]

## Fix
```text
port already taken.
```

## Error signatures
- substring: `another gateway instance is already listening`

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0495/reports_

## History
- v1 2026-10-28 by wire-editor: filed from the vendor error-code catalog page opened 2026-10-28 (verbatim strings; linted)