PrestaShop升级故障咨询：备份及升级日志存储位置

Hey there, sorry to hear you're stuck with your PrestaShop upgrade—blank screens mid-upgrade are the worst! Let me walk you through where to find those critical backup files and upgrade logs to help you troubleshoot and recover:

PrestaShop's upgrade tool creates automatic backups, and you might have manual ones too—here's where to look:

• Automatic Backups (Built-in Upgrade Tool)
  These are stored in your PrestaShop installation's admin/autoupgrade/backups/ directory. Note: admin here is your actual backend folder name (many users rename the default admin to something like admin_secure for security). Each backup is a ZIP file, usually named with the original version, date, and timestamp (e.g., prestashop_backup_1.6.0.x_20240520_143022.zip). Inside the ZIP, you'll find both the full file system backup and a SQL dump of your database.
• Manual Backups
  If you created backups yourself before starting the upgrade (you should always do this!), check wherever you saved them: your local computer, a custom folder on your server, or your hosting control panel's backup storage (like cPanel's "Backups" section).

Logs will show you exactly where the upgrade failed—here are the key places to check:

• Upgrade Tool Logs
  The built-in upgrade tool logs every step in admin/autoupgrade/logs/. Look for files named upgrade.log or date-stamped logs (e.g., upgrade_20240520.log). These files will detail which tasks completed, which scripts ran, and any errors that caused the process to hang or the blank screen.
• Server Error Logs
  A blank screen often points to a PHP fatal error. You can find these logs in:
  • Your hosting control panel (e.g., cPanel's "Error Log" under Metrics)
  • Server directories: /var/log/apache2/error.log (for Apache) or /var/log/nginx/error.log (for Nginx)
  • A php_errors.log file in your PrestaShop root directory (if PHP is configured to log errors locally)

A quick tip: If you can't access the backend, use an FTP client or your hosting's file manager to navigate to these directories. Once you locate a valid backup, you can manually restore it by extracting the ZIP over your current files and importing the SQL dump into your database.

内容的提问来源于stack exchange，提问作者popkutt