PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790948734',
];

$_COOKIE = [
    'PHPSESSID' => 'c98pqker4vd9riih0399uh0sv5',
    'topics-session' => '1792036143.813.17009.568931|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '5bc97d38c54aa4163a1daeeaa7e3ef10cf22e2d54600f949ab90b583a14e6891a:2:{i:0;s:5:"_csrf";i:1;s:32:"9gZWIoxAOPjFVuIFuf9lll6LYt07wPsU";}',
];

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