When the landing decodes a VIN for a logged-in visitor and the API
returns a multi-candidate response (no single id), the code was
navigating to /dashboard/vehicles/$id with id=undefined. The catalog
page then asked the API for /vehicles/undefined and the backend
"invalid input syntax for type uuid: 'undefined'" message landed in
front of the user.
Two-sided fix:
- On the landing, if the decode reply has no id, hand the VIN off to
/dashboard/search?vin=… instead — that page already renders the
candidate-picker and the unrecognised-VIN flow.
- On the vehicle detail page, gate both queries on a UUID check and
render a friendly "Geçersiz araç bağlantısı / Aramaya git" panel for
any malformed id. Also stop showing raw backend error messages in the
generic error state — surface the localised hint instead.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Semih Yesilyurt
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