PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791318671',
];

$_COOKIE = [
    '_csrf' => '03eeb6d0dc5a3a00de7aaf97ed8bdfb45bfcf183a5f010d9caad68ba2f7b38e7a:2:{i:0;s:5:"_csrf";i:1;s:32:"2LkAJIT8IGy19gLfR0HRLzhtjXpZVhO_";}',
    'PHPSESSID' => '30ke158k9e7dr99tmmv71q0lc3',
    'topics-session' => '1791474189.495.16476.291819|d197bbbd1d400bd72372bc93068ad169',
];

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