After updating Joomla to new version you might receive an error on your website called:
No input file specified
So for quering above error do the foolwing steps:
Login to your Joomla admin area and go to Global Config > Site > and making sure ‘no’ is ticked on the “Search Engine Friendly Url’s” option.
That’s it now try accessing your web site the error will be vanished. 😉