Hi @obeyler! Thanks for bringing up this question. You’re in the right place for community insights! For specifying a custom CA certificate with MinIO in Mattermost installations, I recommend reviewing the Mattermost Operator configuration documentation. In particular, double-check the caSecret setup and ensure the MinIO URL doesn’t include a fully qualified path, as that seems related to the error you’re encountering. Let us know how it goes. We’re here to help!