laravel UrlGenerator::__construct() must be an instance of Illuminate\Http\Request, null given报错处理

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[2019-03-22 06:10:01] production.ERROR: Argument 2 passed to Illuminate\Routing\UrlGenerator::__construct() must be an instance of Illuminate\Http\Request, null given, called in /Jingkai/www/jingkai/jkshop/vendor/laravel/framework/src/Illuminate/Routing/RoutingServiceProvider.php on line 61 {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\FatalThrowableError(code: 0): Argument 2 passed to Illuminate\\Routing\\UrlGenerator::__construct() must be an instance of Illuminate\\Http\\Request, null given, called in /Jingkai/www/jingkai/jkshop/vendor/laravel/framework/src/Illuminate/Routing/RoutingServiceProvider.php on line 61 at /Jingkai/www/jingkai/jkshop/vendor/laravel/framework/src/Illuminate/Routing/UrlGenerator.php:111)
 

发生这个错误情况是在config中使用url（）或者asset（）引起的。当运行artisan命令时，laravel无法知道url是啥导致的