PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790881362',
];

$_COOKIE = [
    '_csrf' => '4b0adf13416c829f1576d878bb320a7d929eb20cee6da11fa29d461a53144503a:2:{i:0;s:5:"_csrf";i:1;s:32:"RSJA9O948-cPdrHUNqcgfpIlMyyPt7g-";}',
    'topics-session' => '1791211890.696.16477.550873|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'm7cikgdk0s13r4o0ntrnd7ulk7',
];

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