Unyson / Backup & Demo Content receive error when try to install

Hi. After installing a themeforest theme, after installing Unyson, then I receive the attached error when I try to install Unyson / Backup & Demo Content.
Any help? Thanks, Mauro

Your server seems to be having issues with DNS. If the issue hasn’t gone away already, contact your web host with the error message.

Solved. Problem was that some OTHER plugins were not updated.