PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790889506',
];

$_COOKIE = [
    'PHPSESSID' => 'kggb49uttk93odrhd1ospihe44',
    '_csrf' => '28ef7d71d7790b6901ae30955667ff3f77c722f321e90bf36a243c25dd66f122a:2:{i:0;s:5:"_csrf";i:1;s:32:"QWukqFWatWuJK1707GB3ket00iXmWbOH";}',
    'topics-session' => '1790892472.661.16615.205496|d197bbbd1d400bd72372bc93068ad169',
];

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