如果你在laravel5.5 升級到laravel5.6之后出現這個錯誤,打開app\Http\Middleware\TrustProxies.php
更改以下內容
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',
];
修改為
protected $headers = Request::HEADER_X_FORWARDED_ALL;