Threat has been detected . Infected with JS:Downloader-FHY[Trj]

I have been getting this strange notification from avast since morning on opening a particular site .

Details :

Threat Name : JS: Downloader-FHY[Trj]
URL : https://leetcode.com/problemset/all
Process : C:\Program Files\Avast Software\Avast\AvastSvc.exe
Detected by : Web Shield
Status : Connection aborted
Browser : Google Chrome

Hello,
detection was disabled.

Milos