PHP Core Warning – yii\base\ErrorException

$_GET = [
    'l' => 'ru_RU',
    'popup' => '1',
    'product_id' => '3896',
];

$_SESSION = [
    '__flash' => [],
    'history' => [
        '/catalog/question?l=ru_RU&popup=1&product_id=3896',
    ],
];