geting The following exception probably indicates you have misconfigured DNS resolver(s) when I try to install CookieFix

I’m running this command

• composer require veriteworks/cookiefix

and I’m getting this error

The following exception probably indicates you have misconfigured DNS resolver(s)

In CurlDownloader.php line 365:
                                                                                                                                                  
  curl error 6 while downloading https://repo.megaplaza.com/packages.json: Could not resolve host: repo.megaplaza.com; Name or service not known