Laravelで作ったアプリにアクセスすると、Argument 2 passed to Symfony\Component\HttpFoundation\Request::setTrustedProxies() must be of the type int, array givenってエラーが出る

Laravel

2021.03.172021.10.07

Argument 2 passed to Symfony\Component\HttpFoundation\Request::setTrustedProxies() must be of the type int, array given

Laravel 5.6から6にバージョンアップしてしまったかもしれない🤔

protected $headers = [
    Request::HEADER_FORWARDED => 'FORWARDED',
    Request::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR',
    Request::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST',
    Request::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT',
    Request::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO',
];

こちらに書き換える。

protected $headers = Request::HEADER_X_FORWARDED_ALL;

で、うまく動くはず😅