PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790894945',
];

$_COOKIE = [
    'topics-session' => '1790922339.347.17008.813361|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '3njsl51ps1ur6kgdn0rlha4d90',
    '_csrf' => 'ff2f1f9769ec6433bb18e42cd3e8dae14a5c95ccbf37f1a25ff0a88027949ff8a:2:{i:0;s:5:"_csrf";i:1;s:32:"YaWtpo4GkCJmCoxp6G9xFsLFWKdJHz1m";}',
];

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