CodeIgniter-error

<?php

class Pages extends CI_Controller{

	public function view($page='home')
	{
		if(!file_exists(APPPATH.'/views/pages/'.$pages.'.php'))
		{
			show_404();
		}

		$data['title']=ucfirst($page);
		$this->load->view('template/header',$data);
		$this->load->view('pages/'.$page,$data);
		$this->load->view('templates/footer',$data);
	}
}