Example of dev settings for drupal 8

settings.dev.php

<?php

// <DDSETTINGS>
// Please don't edit anything between <DDSETTINGS> tags.
// This section is autogenerated by Acquia Dev Desktop.
if (isset($_SERVER['DEVDESKTOP_DRUPAL_SETTINGS_DIR']) && file_exists($_SERVER['DEVDESKTOP_DRUPAL_SETTINGS_DIR'] . '/loc_subscriptions_dd.inc')) {
  //echo $_SERVER['DEVDESKTOP_DRUPAL_SETTINGS_DIR'] . '/loc_subscriptions_dd.inc';
  require $_SERVER['DEVDESKTOP_DRUPAL_SETTINGS_DIR'] . '/loc_subscriptions_dd.inc';
  $settings['trusted_host_patterns'] = [];
  $config_directories = array('sync' => '../config/sync');
}
// </DDSETTINGS>

$config['system.logging']['error_level'] = 'verbose';

// See Debugging D8 https://blog.liip.ch/archive/2016/06/20/lets-debug-drupal-8.html

// uncomment this line to enable the “null cache service”:
// $settings['container_yamls'][] = DRUPAL_ROOT . '/sites/development.services.yml';

// uncomment these lines to disable CSS/JS aggregation:
// $config['system.performance']['css']['preprocess'] = FALSE;
// $config['system.performance']['js']['preprocess'] = FALSE;

// uncomment these lines to disable the render cache and the dynamic page cache:
// $settings['cache']['bins']['render'] = 'cache.backend.null';
// $settings['cache']['bins']['dynamic_page_cache'] = 'cache.backend.null';

// you can allow test modules and themes to be installed if needed with:
// $settings['extension_discovery_scan_tests'] = TRUE;

// logging messages
// \Drupal::logger('my_module')->error($message);