PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791537262',
];

$_COOKIE = [
    '_csrf' => '0ed7c5603ffc687a4a9f05da47817e1da6fceb8dfe7c94b2f16ab0f1d6871fc4a:2:{i:0;s:5:"_csrf";i:1;s:32:"YRNqIiCl_VB7W48sotgKmL-wunAGlOyj";}',
    'topics-session' => '1791746901.746.16901.863017|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '0s5cil1an80e7losur3auf1cn3',
];

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