Backup and Migrate

composer.json  composer.lock  recipes  vendor  web

composer require 'drupal/backup_migrate:^5.1'

mkdir -p private/backup_migrate

chmod 777 private

chmod 777 private/backup_migrate

composer.json  composer.lock  private  recipes  vendor  web

chmod 777 sites/default/settings.php

nano sites/default/settings.php
$settings['file_private_path'] = '../private';

chmod 444 sites/default/settings.php

設定→效能(開發)→清除所有快取(清除快取)