PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791365941',
];

$_COOKIE = [
    'PHPSESSID' => 'dkm8qjskgsh1bphen9ifaavik5',
    '_csrf' => 'd5a98c241d949e1a3b5122fdaa1512554f372eebc6404366ff27a8d174e24746a:2:{i:0;s:5:"_csrf";i:1;s:32:"lUzMAhMapdlB-bjhXdTVtXBaQ2LAgTeS";}',
    'topics-session' => '1791398523.517.16551.856537|d197bbbd1d400bd72372bc93068ad169',
];

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