Laravel 5.3会话存储未根据请求设置

Question

我有一个Laravel项目，我得到了以下error并尝试了之前提出的其他问题，但我无法理解这个问题。请任何人指导我。

RuntimeException in C:\xampp\htdocs\project\vendor\laravel\framework\src\Illuminate\Http\Request.php line 905:

我的routes.php文件在这里：

Route::group(['middleware' => ['web']], function () {
// default public route
Route::get('/', 'DashboardController@index');
// Rediret for Login Page
Route::get('/loginmsg', 'LoginMessageController@index');
// dashboard route
Route::get('dashboard/index', 'DashboardController@index');
});
//Route::get('/service/get/login','App\Http\Controllers\Auth\LoginMessageController@index')->name('xyz');
Route::group(['middleware' => 'web'], function () {
    Route::auth();
    Route::get('register', 'DashboardController@index');
}); 

这是我的register.blade.php

@extends('layouts.app')

@section('content')
<div class="container">
    <div class="row">
        <div class="col-md-8 col-md-offset-2">
            <div class="panel panel-default">
                <div class="panel-heading">Register</div>
                <div class="panel-body">
                    <form class="form-horizontal" role="form" method="POST" action="{{ url('/register') }}">
                        {{ csrf_field() }}

                        <div class="form-group{{ $errors->has('name') ? ' has-error' : '' }}">
                            <label for="name" class="col-md-4 control-label">Name</label>

                            <div class="col-md-6">
                                <input id="name" type="text" class="form-control" name="name" value="{{ old('name') }}">

                                @if ($errors->has('name'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('name') }}</strong>
                                    </span>
                                @endif
                            </div>
                        </div>

                        <div class="form-group{{ $errors->has('email') ? ' has-error' : '' }}">
                            <label for="email" class="col-md-4 control-label">E-Mail Address</label>

                            <div class="col-md-6">
                                <input id="email" type="email" class="form-control" name="email" value="{{ old('email') }}">

                                @if ($errors->has('email'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('email') }}</strong>
                                    </span>
                                @endif
                            </div>
                        </div>

                        <div class="form-group{{ $errors->has('password') ? ' has-error' : '' }}">
                            <label for="password" class="col-md-4 control-label">Password</label>

                            <div class="col-md-6">
                                <input id="password" type="password" class="form-control" name="password">

                                @if ($errors->has('password'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('password') }}</strong>
                                    </span>
                                @endif
                            </div>
                        </div>

                        <div class="form-group{{ $errors->has('password_confirmation') ? ' has-error' : '' }}">
                            <label for="password-confirm" class="col-md-4 control-label">Confirm Password</label>

                            <div class="col-md-6">
                                <input id="password-confirm" type="password" class="form-control" name="password_confirmation">

                                @if ($errors->has('password_confirmation'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('password_confirmation') }}</strong>
                                    </span>
                                @endif
                            </div>
                        </div>

                        <div class="form-group">
                            <div class="col-md-6 col-md-offset-4">
                                <button type="submit" class="btn btn-primary">
                                    <i class="fa fa-btn fa-user"></i> Register
                                </button>
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection