|Trusted Host Settings||Not enabled
The trusted_host_patterns setting is not configured in settings.php. This can lead to security vulnerabilities. It is highly recommended that you configure this. See Protecting against HTTP HOST Header attacks for more information.
$settings['trusted_host_patterns'] = array( '^www\.d8blog\.com$', );
|Trusted Host Settings||Enabled
The trusted_host_patterns setting is set to allow ^www\.d8blog\.com$
***_ For Acquia Dev Desktop
$settings['trusted_host_patterns'] = array( '^.*\.dd$', );
Credit Link: https://www.drupal.org/node/1992030