Cannot create Public Certificates for App Service due to missing publicCertificateEnv property

Message when deploying to Azure: "Parameter publicCertificateEnv is null or empty."

When adding property to resource in Bicep file I get the following error: "The property "publicCertificateEnv" is not allowed on objects of type "Microsoft.Web/sites/publicCertificates"

Locate the Bicep type definition for Microsoft.Web/sites/publicCertificates and inspect how its properties are represented. Reproduce the reported Azure deployment and Bicep validation errors, then verify that publicCertificateEnv is accepted and no longer reported as null or empty.

Written by the indexing model from the issue text.