php - 为什么我在使用 Laravel : PHP Catchable Fatal Error? 时会收到此错误

Question

当我尝试运行 php artisan (anything) 时出现此错误:

PHP Catchable fatal error:  Argument 2 passed to
Illuminate\Routing\UrlGenerator::__construct()
must be an instance of Illuminate\Http\Request, null given, called in
/www/laravel5/vendor/laravel/framework/src/Illuminate/Routing/RoutingServiceProvider.php
on line 56 and defined in
/www/laravel5/vendor/laravel/framework/src/Illuminate/Routing/UrlGenerator.php
on line 81

Catchable fatal error: Argument 2 passed to
Illuminate\Routing\UrlGenerator::__construct()
must be an instance of Illuminate\Http\Request, null given, called in
/www/laravel5/vendor/laravel/framework/src/Illuminate/Routing/RoutingServiceProvider.php
on line 56 and defined in
/www/laravel5/vendor/laravel/framework/src/Illuminate/Routing/UrlGenerator.php
on line 81

我完全不知道是什么原因造成的，需要帮助。

提前致谢

Answer 1

好吧，我发现了产生错误的原因。

在 config/services.php 我是这样做的:

'facebook' => [
    'client_id'     => env('FACEBOOK_APP_ID', null),
    'client_secret' => env('FACEBOOK_APP_SECRET', null),
    'redirect'      => url('auth/facebook'),
]

url('auth/facebook') 是导致错误的原因。