PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790914690',
];

$_COOKIE = [
    'topics-session' => '1791243651.757.16476.421012|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'oolhpu1kd4nupphfi8rgu93pa2',
    '_csrf' => 'f44864e817ecd6d90dea269ad2079e64c31c0dcc4715a6d9e630ff46b3682212a:2:{i:0;s:5:"_csrf";i:1;s:32:"mbucg2b11rWl8UtZo4ud7Ix9haJXkJsq";}',
];

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