Fix 1 - UnPoller 404 on UDM Pro: Remove :8443 from UP_UNIFI_DEFAULT_URL. UniFi OS devices (UDM Pro, UDM, UXG, CloudKey) use a different API path and do NOT use port 8443. URL should be https://10.42.1.1 (no port); unpoller handles the /proxy/network path internally for UniFi OS devices. Fix 2 - Grafana dashboards showing invalid datasource: Add uid = "prometheus" to the provisioned Prometheus datasource. Without an explicit UID, Grafana auto-generates one on first run. All dashboard JSON references datasource uid "prometheus" which only works if the provisioning explicitly sets that UID.