This Error happen during Installation and is due to an Incorrect Joomla’s Owner or Permissions Settings.
To Set your Joomla’s Permissions look Here.
To Correct Joomla’s Ownership you have Three Choices:
Set the Entire Joomla Domain to “World” Writable, Install and Reset Correct Permissions
sudo chmod -R 777 path/To/Your/Joomla
After Installation your Reset your Permissions
Set the Joomla’s Owner like the Apache One. Example:
sudo chown -R www:www path/To/Your/Joomla
The Only Universal Solution is:
I shown the three Possibilities because can happen than for Some Reasons Joomla’s and Apache’s Owners Can’t be the Same…
But Only the Latest one Execute a Definitive Role.
Joomla How to Enable Articles Custom Order: