PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791907744',
];

$_COOKIE = [
    '_csrf' => 'e289cfcff38181a4880742dd0a7d566c03bb92db44a0d17aaba2321e02e8b1aaa:2:{i:0;s:5:"_csrf";i:1;s:32:"69WDTytXVTAGpO0ZBG_8xm3aV3muRtqn";}',
    'PHPSESSID' => 'kunqbue4lhobj0s48868u5t9k4',
    'topics-session' => '1791959332.122.16974.934075|d197bbbd1d400bd72372bc93068ad169',
];

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