PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791902684',
];

$_COOKIE = [
    'topics-session' => '1792042266.628.16551.38236|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'l4oo1hq89mslcb8vdack60g9o2',
    '_csrf' => '536816c20fc33a451c0b342affe7fe891348ccae9befaa948a6afeec1f7b64f1a:2:{i:0;s:5:"_csrf";i:1;s:32:"ylzr8OAcGJ3EjwudL10121K4DbhYKVGY";}',
];

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