PHP Core Warning – yii\base\ErrorException

$_GET = [
    'S' => [
        'search' => 'рюкзак',
    ],
    'page' => '99',
];

$_COOKIE = [
    '_csrf' => 'b692b7d3a812350ae273d2c5a7eb10de5847c9cffdd83eda4ca61a49711b10d0a:2:{i:0;s:5:"_csrf";i:1;s:32:"jW-66kah7YyJo14gq6bs1NChxZz5zqG-";}',
    'PHPSESSID' => 'mc3gdr8e9idml6jdjbr8mg0hch',
];

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