"This website is not safe" with one of my Client websites

Hello,

This message is displayed on Chrome with one of my Client websites that I developed 3 years ago.

I tried to add an exception for this site but it doesn’t work.

No bp with Safari.

How to prevent Avast from blocking this site?

Thanks

Report a false positive (select file or website)
https://www.avast.com/false-positive-file-form.php