Tidak bisa men-decode token, rest api codeigniter

saya lagi ngikut tutorial rest api codeigniter di playlist sekolah koding, nah di saat di bagian check token saya mendapat error saat ingin mendecode token

Hasil dari Postman :

Routes :

<?php
defined('BASEPATH') or exit('No direct script access allowed');

// ROUTE API
$route['api/users']['GET']          = 'UserController/get_all';
$route['api/user/(:num)']['GET']    = 'UserController/get/$1';
$route['api/register']['POST']      = 'UserController/register';
$route['api/user/(:num)']['PUT']    = 'UserController/update/$1';
$route['api/user/(:num)']['DELETE'] = 'UserController/delete/$1';
$route['api/login']                 = 'UserController/login';

$route['api/check_token']['GET']    = 'UserController/check_token';

$route['default_controller'] = 'welcome';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;

Controller :

<?php
defined('BASEPATH') or exit('No direct script access allowed');

require_once APPPATH . '/libraries/JWT.php';

use \Firebase\JWT\JWT;

class UserController extends CI_Controller
{
	private $secret = 'this is key secret';

	public function __construct()
	{
		parent::__construct();
		$this->load->model('user');
	}

	public function response($data)
	{
		$this->output
			->set_content_type('application/json')
			->set_status_header(200)
			->set_output(json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES))
			->_display();

		exit;
	}

	public function register()
	{
		return $this->response($this->user->save());
	}

	public function get_all()
	{
		return $this->response($this->user->get());
	}

	public function get($id)
	{
		return $this->response($this->user->get('id', $id));
	}

	public function login()
	{

		$date = new DateTime();

		if (!$this->user->is_valid()) {
			return $this->response([
				'success' => false,
				'message' => 'email atau password salah'
			]);
		}

		$user = $this->user->get('email', $this->input->post('email'));
		// encode data
		$payload['id'] 		= $user->id;
		$payload['iat'] 	= $date->getTimestamp();
		$payload['exp'] 	= $date->getTimestamp() + 60 * 60 * 2;

		$output['id_token'] = JWT::encode($payload, $this->secret);
		$this->response($output);
	}

	public function check_token()
	{
		$jwt = $this->input->get_request_header('Authorization');

		try {
			$decoded = JWT::decode($jwt, $this->secret, array('HS256'));
			var_dump($decoded);
		} catch (\Exception $e) {
			// return $this->response([
			// 	'success' => false,
			// 	'message' => 'gagal, error token'
			// ]);
			var_dump($e);
		}
	}

	public function delete($id)
	{
		// check user login
		$this->check_token();
		// orang yang login yg mau hapus
	}
}

Models :

<?php

class User extends CI_Model
{
    public function save()
    {
        $data = [
            'email'    => $this->input->post('email'),
            'password' => password_hash($this->input->post('password'), PASSWORD_DEFAULT),
        ];

        if ($this->db->insert('users', $data)) {
            return [
                'id'      => $this->db->insert_id(),
                'success' => true,
                'message' => 'data berhasil dimasukan'
            ];
        }
    }

    public function get($key = null, $value = null)
    {
        if ($key != null) {
            $query = $this->db->get_where('users', array($key => $value));
            return $query->row();
        }

        $query = $this->db->get('users');
        return $query->result();
    }

    public function is_valid()
    {
        $email = $this->input->post('email');
        $password = $this->input->post('password');

        $hash = $this->get('email', $email)->password;

        if (password_verify($password, $hash))
            return true;

        return false;
    }
}