Undefined property: Illuminate\View\Factory::$yieldContent (View: /home/wwwroot/default/resources/views/common/layouts.blade.php) (View: /home/wwwroot/default/resources/views/common/layouts.blade.php)
在使用$error时需要用到中间件：
\Illuminate\Session\Middleware\StartSession::class,
\Illuminate\View\Middleware\ShareErrorsFromSession::class,