Bitdefender blocks a .js file from kibergoil.com.
I have exactly the same issue with Avast. Any body know the answer?
Disable or uninstall your Video Downloader Professional extension on Chrome. It'll fix it. It worked for everyone else with the same issue, and everyone had the extension.
The website is blocked due to adware. And it is blocked by multiple AV vendors including malwarebytes. Presently the website is no more functional.
(Bitdefender beta tester 2019/ 2020)