PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791135586',
];

$_COOKIE = [
    'topics-session' => '1791252985.062.16478.771846|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'k401i499t82313n0uhj9rl0he2',
    '_csrf' => 'd24930a663382b2d4894e8e824f4f6d79100127f8ce6d718d507ed84722d421aa:2:{i:0;s:5:"_csrf";i:1;s:32:"r-yR2jKQ2UXdAy74jOj3lkHFviSXGBW2";}',
];

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