/private/var/log/apache2
This results the "Web Sharing" feature to fail, as Apache Web Server fails to start
To make Apache work again just create that folder againSteps to create the folder:
1: Open the Terminal (It is in /Applications/Utilities/Terminal)
2:Type the command:
sudo mkdir /private/var/log/apache2
3: When prompted for password, type your system password
It should start working again. If it doesn't there might be another problem. Check your console logs in "/Applications/Utilities/Console"