PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791279048',
];

$_COOKIE = [
    'PHPSESSID' => 'vh2j2ck32oj4jl9as043velcg7',
    '_csrf' => '8db7617187332eb831eacc7f8feaa5bbc9d17adda38093f08ab36b5d318070a7a:2:{i:0;s:5:"_csrf";i:1;s:32:"TP-bU4TxSRauGh3XEVppXO5vMKHXzMDR";}',
    'topics-session' => '1792021581.297.16478.139346|d197bbbd1d400bd72372bc93068ad169',
];

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