CONSOLE ERROR: line 23: Mixed Content: The page at 'https://web-platform.test:8444/cookies/secure/set-from-ws.https.sub.html' was loaded over HTTPS, but attempted to connect to the insecure WebSocket endpoint 'ws://web-platform.test:9001/set-cookie-secure?secure_from_nonsecure'. This request has been blocked; this endpoint must be available over WSS.
