PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791425368',
];

$_COOKIE = [
    'topics-session' => '1791444295.416.17043.668332|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'df4c0c9333cdf57c8155db96313a19890a1b56e0f1a781cb302a52b014b23548a:2:{i:0;s:5:"_csrf";i:1;s:32:"n3SEakVVirSm2C9johyl59vpW1LRJEsG";}',
    'PHPSESSID' => 't8k2bhiaooqcsmfifggn9pu0m0',
];

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