2019-04-29 07:39:52.923 com.apple.WebKit.Networking.Development[59666:547442] DiskCookieStorage changing policy from 0 to 2, cookie file: file:///Users/buildbot/Library/Developer/CoreSimulator/Devices/51180114-83F2-41F8-B051-5D1AD532A4C9/data/Containers/Data/Application/8658719C-2A28-4951-976F-EB3AE52F4CB0/Library/Cookies/Cookies.binarycookies
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=9af2c760-6a76-4404-a060-6bf91f82394d&redirect_status=307&location=http%3A%2F%2F127.0.0.1%3A8800%2FWebKit%2Fbeacon%2Fresources%2Fbeacon-preflight.py%3FallowCors%3D0%26cmd%3Dput%26id%3D9af2c760-6a76-4404-a060-6bf91f82394d&count=1. Preflight response is not successful
