PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790956696',
];

$_COOKIE = [
    '_csrf' => 'bb622c3a92ba5ba6d28375cc90ef9142b53039736338ce850e28ca6b8215fa45a:2:{i:0;s:5:"_csrf";i:1;s:32:"9A8oTAQcz72yeK8CSLGUlYSKPRp0NFr3";}',
    'PHPSESSID' => '0kdcgdmq2kel6v8tbdl9suv9u4',
    'topics-session' => '1790978963.874.16476.717189|d197bbbd1d400bd72372bc93068ad169',
];

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