False Positive: Site Blocked - URL:Phishing

The avast is saiyng that my domain https://api.area.formando.stillos.com.br is blocked. What’s the problem?

You can report a suspected FP (File/Website) here: https://www.avast.com/false-positive-file-form.php

See: https://urlquery.net/report/e8f799bc-00a2-4808-b44d-04bf284446eb
Server issues and outdated software: https://sitecheck.sucuri.net/results/https/api.area.formando.stillos.com.br
SNI and HTTP conflict detected. No content returned: https://aw-snap.info/file-viewer/?protocol=secure&ref_sel=GSP2&ua_sel=ff&chk-cache=&fs=1&tgt=fHBbLnx9e3wuZl19bXxuI10uc3RbbGxdcy5eXW0uYn0%3D~enc
Vuln. to Poodle, etc. : https://toolbar.netcraft.com/site_report?url=https%3A%2F%2Fapi.area.formando.stillos.com.br+
18 recommendations: https://webhint.io/scanner/fdc6a7ae-1f12-4fe7-a923-336028813696
5 security related: https://webhint.io/scanner/fdc6a7ae-1f12-4fe7-a923-336028813696#Security

polonus (volunteer website security analyst and website error-hunter)