PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790998751',
];

$_COOKIE = [
    'topics-session' => '1791144913.037.16478.681466|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '1vbrcnrik219vc23lbd6l8nae6',
    '_csrf' => 'ac9f39eb4c6459e00148c8d3fb87b54839106665fc85c840af97ba1d40a1b4c0a:2:{i:0;s:5:"_csrf";i:1;s:32:"BQZ5-XZzzCfkRs9tBwLboTjO85S2iZ0U";}',
];

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