CONSOLE MESSAGE: Preflight response is not successful
CONSOLE MESSAGE: Beacon API cannot load http://127.0.0.1:8800/WebKit/beacon/resources/beacon-preflight.py?allowCors=0&cmd=put&id=8a5c67e9-e86e-46c3-a0c0-011dd7d9382b&redirect_status=307&location=http%3A%2F%2F127.0.0.1%3A8800%2FWebKit%2Fbeacon%2Fresources%2Fbeacon-preflight.py%3FallowCors%3D0%26cmd%3Dput%26id%3D8a5c67e9-e86e-46c3-a0c0-011dd7d9382b&count=1. Preflight response is not successful
