Error

PHP Noticeyii\base\ErrorException

Trying to get property of non-object

$_GET = [
    'title' => '%E5%94%AE%E5%90%8E%E6%94%AF%E6%8C%81',
    'type' => 'contact',
    'number' => '13',
];

$_SESSION = [
    '__flash' => [],
];