Error 0 Cannot open file for writing log while updating Joomla By NST 16 Jun, 2017 Joomla, PHP 0 Sounds like a permissions issue. In the Joomla backend, go to: 1). System >> System Information >> Folder Permissions 2). Make sure all files and folders apart from the global configuration.php are writable. 3). If they aren't, then you will...