PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790904010',
];

$_COOKIE = [
    'topics-session' => '1791366089.475.16511.35118|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '3obvevbdtc1431uqv3cvbeeje5',
    '_csrf' => '640e8421e20047b25520be3b98e7ec25a8d152937600c00b048426517b3d9a15a:2:{i:0;s:5:"_csrf";i:1;s:32:"zqqKblvBBgYSD48Ukz2Jf-iEDcJ_RrRB";}',
];

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