codignaiter project error on live server

Those are PHP config warnings and have nothing to do with CodeIgniter. Basically the errors are saying that suhosin is not installed on your server. Installing Documentation Here  https://suhosin.org/stories/install.html

Not quite. It is saying that PHP is configured to load the suhosin extension, but couldn't find it at the specified location.
That doesn't necessarily mean that it is not installed (though it is likely).

Either way, I'd suggest disabling that instead of trying to make it work.