HestiaCP ошибка при скачивании

ERROR: The certificate of `raw.githubusercontent.com’ is not trusted на Debian 9

root@sb:~# wget https://raw.githubusercontent.com/hestiacp/hestiacp/release/install/hst-install.sh
--2020-06-03 13:29:26-- https://raw.githubusercontent.com/hestiacp/hestiacp/release/install/hst-install.sh
Resolving raw.githubusercontent.com (raw.githubusercontent.com)… 151.101.112.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.112.133|:443… connected.
ERROR: The certificate of ‘raw.githubusercontent.com’ is not trusted.
ERROR: The certificate of ‘raw.githubusercontent.com’ hasn't got a known issuer.

Решение:

$ sudo apt-get install ca-certificates
$ sudo apt-get install ssl-cert