Unknown ?qr form

HTTP 400 · bad-qr — ← all Webpath errors

The ?qr form is not recognized.

How to recover. Use ?qr, ?qr=svg, or ?qr=txt.

Example response

{
  "type": "https://muse.as/a/webpath/errors/bad-qr",
  "title": "Unknown ?qr form",
  "status": 400,
  "detail": "Use ?qr, ?qr=svg, or ?qr=txt."
}

This page documents the bad-qr error type returned in Webpath RFC 7807 application/problem+json responses. The machine-readable detail field carries a recovery hint you can show a user verbatim — see the Spec §12 and API Reference.