PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791208997',
];

$_COOKIE = [
    '_csrf' => '8e1b2dcd1391ab3f7e9c4e46269dfc05aabb8c5f1e2068c07b00dca2f5c949e2a:2:{i:0;s:5:"_csrf";i:1;s:32:"8jrZrMYd36Ixi5yb4pGdlwFVToC_c7vk";}',
    'topics-session' => '1791223118.877.16477.655712|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '7cc30g1tgkjicq33j7eqgk7bu6',
];

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