學習 Laravel 那些坑（三） csrf_token()

laravel 5.5 填寫註冊資訊時遇到錯誤資訊

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http 狀態 419 Authentication Timeout (not in RFC 2616)

這時 url 已跳轉到 login，顯然登入時有問題；查了下是 csrf_token 的問題；
php - laravel 5.5 The page has expired due to inactivity. Please refresh and try again - Stack Overflow

題主命中的 answer是：

This problem comes from the CSRF token verification which fails. So either you’re not posting one, or you’re posting an incorrect one.

The reason it works for GET is that for a GET route in laravel, there is no CSRF token posted.

You can either post a CSRF token in your form by calling:

 {{ csrf_field() }}

Or exclude your route in app/Http/Middleware/VerifyCsrfToken.php

 protected $except = [        'your/route'    ];

試過了，然並卵；不是這種情況；

後來想到 csrf 會不會是.env 裡配置的問題，

 APP_URL=localhost

修改為訪問的 url，依然並卵；

後又修改 storage 許可權，問題解決。