Lovely Monday everyone 🙂 I have another (support) question: one of our Ory Network projects gives us a strange error message when requesting `.well-known/openid-configuration`:

$ http <https://mystifying-carver-akajr6v4t8.projects.oryapis.com/.well-known/openid-configuration>

[...] headers


{
    "error": "server_error",
    "error_description": "The authorization server encountered an unexpected condition that prevented it from fulfilling the request. Could not ensure that signing keys for 'hydra.openid.id-token' exists. If you are running against a persistent SQL database this is most likely because your 'secrets.system' ('SECRETS_SYSTEM' environment variable) is not set or changed. When running with an SQL database backend you need to make sure that the secret is set and stays the same, unless when doing key rotation. This may also happen when you forget to run 'hydra migrate sql.."
}

I can’t make out why this could be the case, can someone from Ory help? (our other project(s) work just fine)

Can you please provide the slug URL? we can then fix this for you