Session store not set on request.

lavarel路由调用，访问报错：

ErrorException in 7512e84842ec28816813b048640980a4d0dfb729.php line 1: Undefined variable: errors

然后就在调用$errors的地方判断isset($errors) ，报错

Session store not set on request. (View: D:\phpstudy\WWW\laravel-master\resources\views\auth\login.blade.php)

找了很久，也修改了routes.php文件：

Route::group(['middleware' => ['web']], function () {
    //
});
仍然报错，看了 session是使用默认file，没问题；app/storage文件也是可写的，然后在

Kernel.php中添加了

protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
    \Illuminate\Session\Middleware\StartSession::class,
    \Illuminate\View\Middleware\ShareErrorsFromSession::class,
];
终于可以了