"Invalid AWS Lambda parameters used in this request" on function creation — faktorist2026 (Next.js, please exclude from rollout)

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Site: faktorist2026 (faktorist.com) · Account ID: 6977ce86bb50881513d2dfcc

Every production deploy fails at the Deploying stage with:

`Failed to create function: invalid parameter for function creation: Invalid AWS Lambda parameters used in this request.on___netlify-server-handler` (HTTP 400, PUT /deploys/{deploy_id}/functions/{name}). The build completes successfully — only function creation fails. Recent failed deploy IDs: 6a45177c8c5da600084a5976 and 6a4514708c0d3d00082509b1.

This looks like the known backend feature-flag rollout issue resolved in topics 119535 and 146976, where staff excluded the affected site from the rollout / adjusted a backend flag (“this is due to a recent change we rolled out… I’m going to exclude you from the rollout”). Could you please apply the same exclusion / flag fix to this site?

We’ve already ruled out every site-side cause:

  • No AWS_-prefixed env vars in any scope
    • Reduced the function’s Functions-scoped env vars ~70% (values bundled into the function, vars scoped to Builds only) — no change
      • Bumped @netlify/plugin-nextjs 5.15.11 to 5.15.12 — no change
        • Tested Node 20 and 22 — no change
      • Stack: Next.js 14.2.28, Next.js Runtime v5.15.12, Node 20. We also have helpdesk ticket #1061250 open on this. Thank you!