Since 2026-07-13 ~19:00 UTC every deploy-preview build of our Next.js site fails at the Deploying stage:
Failed to create function: invalid parameter for function creation:
Invalid AWS Lambda parameters used in this request.
Failed to upload file: ___netlify-server-handler (HTTP 400 on uploadDeployFunction)
- Site: cvsharp (id: 3f04815a-8951-4a1f-b613-8ab661442730), team MaYesh
- Last successful deploy: 2026-07-13 06:22 UTC; first failure: 2026-07-13 19:58 UTC — with byte-identical code (verified by reverting and redeploying)
- The build compiles successfully; only Lambda function creation fails
- Build image is “noble” (we did not change it); the running image shows “noble-new-builds”
- A brand-new site in the same team, same repo, builds the same code with no error — which points to a rollout our existing site is in
- Ruled out on our side: env var size (trimmed ~500B, no change), plugin version (@netlify/plugin-nextjs 5.15.12), cdp_enabled_contexts toggle, Node version
- Example failed deploy ids: 6a5547055f214e00089ccd2d, 6a55436d112a4500084af0c0
This matches forum topics 164582 / 130850 / 146976, which were resolved by excluding the affected site from a backend rollout. Please exclude our site cvsharp as well.