Threats couldn't be Resolved!

Hi there,
I just did a virus scan and Avast says there is 4 malware threats remaining that couldnt be resolved.
The threat name: URL Blacklist
And the infected files are all websites:
https vae.fyi
https graizoah.com etc.

Should I be worried?
I presume Avast blocked access to these sites, but why are they remaining?
And what can I do about this?

Any help would be appreciated.
Thanks!

https://forum.avast.com/index.php?board=4.0 (Best you post/ask in the dedicated forum section)