PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790904197',
];

$_COOKIE = [
    'topics-session' => '1791206440.206.16480.442455|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '7a0e6e025670d3cfc7c287e9223fa00dd565d439ae41037ac065d8d4d57a3a00a:2:{i:0;s:5:"_csrf";i:1;s:32:"8Z6m9LRv3gC992xS_PARvIWG6O4XjD8G";}',
    'PHPSESSID' => 'n2vrisgd4npspvoh79c797ggg3',
];

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