CONSOLE ERROR: line 11: Mixed Content: The page at 'https://web-platform.test:8444/beacon/headers/header-referrer-no-referrer-when-downgrade.https.html' was loaded over HTTPS, but requested an insecure Beacon endpoint 'http://web-platform.test:8001/beacon/resources/inspect-header.py?header=referer&cmd=put&id=bd950e70-6e23-42dd-b2d1-b472c37cc0f5'. This request has been blocked; the content must be served over HTTPS.
