The vendor detail page and layout called api.vendors.getById without a
try/catch. The API client throws ApiError on any non-2xx, so a 404 (missing
vendor), 401, or 5xx during SSR threw out of the server component and
white-screened the whole route with a generic "server-side exception" —
the existing `if (!vendor)` fallback was never reached.
Guard both fetches: log the error and degrade gracefully (page shows
"Vendor not found", layout renders chrome with a fallback title).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ERP-System
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