Cannot provision SSL certificate for custom subdomain

Hi,

I cannot provision a Let’s Encrypt SSL certificate for my custom domain.

Site name: sage-daffodil-c59104

Domain: lp.welfast.jp

Error: “certificate parameter is required when updating an existing certificate”

DNS is correctly configured: - CNAME: lp.welfast.jp → sage-daffodil-c59104.netlify.app

The “Provision certificate” button shows this error every time. Please manually re-provision the certificate.

Thank you.