Getting "Undefined property" error message

[eluser]Armando Ramos[/eluser]
Hi, I'm new to CI.

I recently created my own library file called "Error_handle.php" in "application/libraries" that handles any run time error.

I updated my autoload.php file to this:
$autoload['libraries'] = array('authorizor', 'error_handler');

Here is the code in which I call my the class from my library file:

Code:

function index()
    {
        if($this->authorizor->user_authorized())
        {
            $user = $_SESSION[session_id()];
            //print_r($user);
            try
            {
                $q = "";
                if($user[0]['Role']['name'] == 'admin')
                {
                    $q = Doctrine_Query::create()
                        ->from('Rsewrite_Map rm')
                        ->leftJoin('rm.User u');
                }
                else
                {
                    $q = Doctrine_Query::create()
                    ->from('Rewrite_Map')
                    ->where('u_id = ?', $user[0]['id'])
                    ->andWhere('disabled = ?', '0');
                }
                $rewrite_map = $q->fetchArray();
                //print_r($rewrite_map);
                
                $data['rewrite_map'] = $rewrite_map;
                $this->load->view("rm_records_view", $data);
            }
            catch(Exception $e)
            {
                $this->error_handler->get_error($e, $_SERVER['HTTP_REFERER']);
            }
        }
    }

However, I get the following error:
A PHP Error was encountered

Severity: Notice

Message: Undefined property: RM_Records::$error_handler

Filename: controllers/rm_records.php

What am I doing wrong?