Error

PHP Noticeyii\base\ErrorException

Trying to get property of non-object

$_GET = [
    'id' => '13',
    'a' => '1',
];

$_SESSION = [
    '__flash' => [
        'error' => -1,
    ],
    '_language' => 'kk',
    'error' => 'Деректер дұрыс емес!',
];