"Cannot open file for writing log"

Why it happens

Joomla tries to write a log to the folder set in Global Configuration. After moving the site, that path often still points to the old server, so the folder doesn't exist.

Fix it

1. Go to System → Global Configuration → Logging.
2. Set Path to Log Folder to your site's folder plus /administrator/logs (Joomla shows the site path in System Information).
3. Make sure the folder exists and is writable (755).
4. Save.

Good to know

• Can't reach the administrator? Edit $log_path in configuration.php directly.