Notice (8): Trying to access array offset on value of type null [APP/Controller/UsersController.php, line 17]
Code Context
        //自分のページ
        $is_mine = false;
        if($this->user_data['id'] == $user_contents['id'])$is_mine = true;
$screen_name = 'Gostphy55'
$title_for_layout = 'Share Books :: 書いてシェアするという提案'
$db_user_data = array(
	'User' => array(
		'password' => '*****',
		'id' => '30',
		'name' => 'Mohmmed90',
		'screen_name' => 'Gostphy55',
		'twitter_id' => null,
		'facebook_id' => null,
		'mail' => 'mohmmededalwan218@yandex.com',
		'modified' => '2019-08-30 05:38:15',
		'created' => '2019-08-30 05:38:15'
	)
)
$user_contents = array(
	'password' => '*****',
	'id' => '30',
	'name' => 'Mohmmed90',
	'screen_name' => 'Gostphy55',
	'twitter_id' => null,
	'facebook_id' => null,
	'mail' => 'mohmmededalwan218@yandex.com',
	'modified' => '2019-08-30 05:38:15',
	'created' => '2019-08-30 05:38:15'
)
$is_mine = false
UsersController::index() - APP/Controller/UsersController.php, line 17
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 499
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 193
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - /home/users/1/but.jp-yu29/web/sharebooks.us/sharebooks.us/index.php, line 109