PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791502556',
];

$_COOKIE = [
    'topics-session' => '1791509000.325.16481.404830|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '05f9ae41feeaaa35ff524b990945e7e6d5725effcf79848f4906acfb84c7ae78a:2:{i:0;s:5:"_csrf";i:1;s:32:"deH_NQ8CazMC5lvUwypRRbzX-8mSf7m0";}',
    'PHPSESSID' => 'rb2rqko9mgboh481mn1vkt3183',
];

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