Sometime whenever we trying to update Joomla and it gives us a message of " Error 0 Cannot open file for writing log " than Please first follow these Steps. 1) If after following these step the issue still occur...
If in Joomla backend Temp and Log folder showing unwritable !
Error 0 Cannot open file for writing log while updating Joomla
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...