Cloner is not working properly


I just installed the cloner and tried to clone our main site, after I click the clone button on the main site the page will just load and create a new site however the new site that has been created only shows an error "ERR_NAME_NOT_RESOLVED".

I tried to deactivate all the plugins and left the cloner but I still got the same error.

Your prompt reply will be highly appreciated because we badly need it to work quickly.