Symantec Clicktime Protection is no longer scanning the link you have opened. The site you are trying to visit may be harmful. If you know the site is safe, you can proceed by copying the following URL and pasting it into your browser:

https://gist.github.com/traut/fd4b9b8de3c2aa0e161d68c4099656e5

Learn more about Advanced Threat Protection and how Symantec can help you.