[root@test3 ~]# wget "https://ext.plesk.com/api/v2/packages?playform=unix&version=18.02&ai-compatible"
--2019-10-02 02:38:56-- https://ext.plesk.com/api/v2/packages?playform=unix&version=18.02&ai-compatible
Resolving ext.plesk.com (ext.plesk.com)... 185.246.209.10
Connecting to ext.plesk.com (ext.plesk.com)|185.246.209.10|:443... connected.
ERROR: cannot verify ext.plesk.com's certificate, issued by ‘/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3’:
Issued certificate not yet valid.
To connect to ext.plesk.com insecurely, use `--no-check-certificate'.