Custom domains β cert chain anchors at a root that Node 24 doesn't trust
πͺ²Bug Report
[TypeError: fetch failed]
cause: Error: unable to get local issuer certificate
code: 'UNABLE_TO_GET_ISSUER_CERT_LOCALLY'
Vercel log (region iad1, nodejs24.x):
POST cloud.domain.io/api/query β 43ms (TLS rejection) β 500 on /c/<slug>
Both subdomains were provisioned 2026-05-04 with the same Cloudflare-served chain, anchored at AAA Certificate Services (Comodo 2004 root):
domain1 / domain2
ββ Cloudflare TLS Issuing ECC CA 3
ββ SSL.com TLS Transit ECC CA R2
ββ AAA Certificate Services (root)
cause: Error: unable to get local issuer certificate
code: 'UNABLE_TO_GET_ISSUER_CERT_LOCALLY'
Vercel log (region iad1, nodejs24.x):
POST cloud.domain.io/api/query β 43ms (TLS rejection) β 500 on /c/<slug>
Both subdomains were provisioned 2026-05-04 with the same Cloudflare-served chain, anchored at AAA Certificate Services (Comodo 2004 root):
domain1 / domain2
ββ Cloudflare TLS Issuing ECC CA 3
ββ SSL.com TLS Transit ECC CA R2
ββ AAA Certificate Services (root)
