My website ( hxxps://copafacil.com ) is being blocked by Web Phishing. I did the analysis on several sites and did not find the problem.
First - Please ‘modify’ your post change the URL from https to hXXps, to break the link and avoid accidental exposure to suspect sites, thanks.
You don’t mention the sites where you checked it.
Considered a Low Security Risk, with some points - https://sitecheck.sucuri.net/results/https/copafacil.com
Some Security issues and other pointers reported here - https://webhint.io/scanner/874734d1-4563-4221-8917-edc3d4beb6e7
Lots of outdated software, which could leave the site vulnerable - https://awesometechstack.com/analysis/website/copafacil.com/?protocol=https%3A
These may or may not be the reason for Avast detection, but should be addressed anyway.
Reporting Possible False Positive File or Website - https://www.avast.com/false-positive-file-form.php.
Then one can read on issues found (see DavidR’s response) for instance here:
https://snyk.io/advisor/npm-package/popper.js-lite@1.14.0-rc1 (last release was over 3 years old!).
polonus