cURL error 7: Failed to connect to cloud.nastuzzi.fr port 443: no route to host

Hi all,
When installing External storage support for Google Drive I get an error:

cURL error 7: Failed to connect to cloud.nastuzzi.fr port 443: no route to host.

When curling from command line, I get the same result.
What may be wrong?

My system is:

Nextcloud version: 14
Operating system and version Debian 8 (Jessie):
Apache or nginx version Nginx 1.14.0:
PHP version 7.1.20: