Intervention Image Package - Can't install - file could not be downloaded

I have this error when I try to install intervention/image in Laravel 5.8:

[Composer\Downloader\TransportException] The "https://ift.tt/3f15RiW" file could not be downloaded: php_network_g etaddresses: getaddrinfo failed: No such host is known. failed to open stream: php_network_getaddresses: getaddrinfo failed: No such host is known.

Could you help me to understand the error and how I can fix it, please?

Thanks in advance.

via Chebli Mohamed