PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791115944',
];

$_COOKIE = [
    'PHPSESSID' => 'stlc6ad161d35k8r8bko2c5iu2',
    'topics-session' => '1791378066.645.16814.233102|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '2575d5143a6e532dffa520b2c013a9c9c06991f79d5a285bc70d9af3dd12d2e1a:2:{i:0;s:5:"_csrf";i:1;s:32:"yAt71BVlL0H6uW9RxDAhul5QKK-HFYPC";}',
];

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