PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791028690',
];

$_COOKIE = [
    'PHPSESSID' => 'hrh15buki2qkk1fkqlpaevstu7',
    'topics-session' => '1791207416.929.16478.840073|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '587e7e729288c7b09c3c2f7b9ae4920dde53c3839f622ea91b336ac2f27d411fa:2:{i:0;s:5:"_csrf";i:1;s:32:"MuZg0jsmLwodOTaNEYAw5g6tuZy0Sxda";}',
];

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