不能访问通过gii从url创建的CRUD

我想用Yii2框架做一个todo应用程序。我使用Gii插件创建模型、控制器和视图。但是当我在地址栏中输入地址到列表的索引时错误404发生。

我的索引打开了http://localhost/basic/web/

我尝试了所有的url组合，但仍然是相同的错误。所有的文件都已正确创建，但我仍然找不到它们。

sitecontroller.php

 <?php
namespace app'controllers;
use Yii;
use yii'filters'AccessControl;
use yii'web'Controller;
use yii'filters'VerbFilter;
use app'models'LoginForm;
use app'models'ContactForm;
class SiteController extends Controller
{
    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'only' => ['logout'],
                'rules' => [
                    [
                        'actions' => ['logout'],
                        'allow' => true,
                        'roles' => ['@'],
                    ],
                ],
            ],
            'verbs' => [
                'class' => VerbFilter::className(),
                'actions' => [
                    'logout' => ['post'],
                ],
            ],
        ];
    }
    /**
     * @inheritdoc
     */
    public function actions()
    {
        return [
            'error' => [
                'class' => 'yii'web'ErrorAction',
            ],
            'captcha' => [
                'class' => 'yii'captcha'CaptchaAction',
                'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
            ],
        ];
    }
    /**
     * Displays homepage.
     *
     * @return string
     */
    public function actionIndex()
    {
        return $this->render('index');
    }
    /**
     * Login action.
     *
     * @return string
     */
    public function actionLogin()
    {
        if (!Yii::$app->user->isGuest) {
            return $this->goHome();
        }
        $model = new LoginForm();
        if ($model->load(Yii::$app->request->post()) && $model->login()) {
            return $this->goBack();
        }
        return $this->render('login', [
            'model' => $model,
        ]);
    }
    /**
     * Logout action.
     *
     * @return string
     */
    public function actionLogout()
    {
        Yii::$app->user->logout();
        return $this->goHome();
    }
    /**
     * Displays contact page.
     *
     * @return string
     */
    public function actionContact()
    {
        $model = new ContactForm();
        if ($model->load(Yii::$app->request->post()) && $model->contact(Yii::$app->params['adminEmail'])) {
            Yii::$app->session->setFlash('contactFormSubmitted');
            return $this->refresh();
        }
        return $this->render('contact', [
            'model' => $model,
        ]);
    }
    /**
     * Displays about page.
     *
     * @return string
     */
    public function actionAbout()
    {
        return $this->render('about');
    }
    public function actionSay($message = 'Hello')
    {
        return $this->render('say',['message'=>$message]);
    }
}

视图/网站/index . php

<?php
/* @var $this yii'web'View */
$this->title = 'My Yii Application';
?>
<div class="site-index">
    <div class="jumbotron">
        <h1>Congratulations!</h1>
        <p class="lead">You have successfully created your Yii-powered application.</p>
        <p><a class="btn btn-lg btn-success" href="http://www.yiiframework.com">Get started with Yii</a></p>
    </div>
    <div class="body-content">
        <div class="row">
            <div class="col-lg-4">
                <h2>Heading</h2>
                <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et
                    dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip
                    ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
                    fugiat nulla pariatur.</p>
                <p><a class="btn btn-default" href="http://www.yiiframework.com/doc/">Yii Documentation &raquo;</a></p>
            </div>
            <div class="col-lg-4">
                <h2>Heading</h2>
                <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et
                    dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip
                    ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
                    fugiat nulla pariatur.</p>
                <p><a class="btn btn-default" href="http://www.yiiframework.com/forum/">Yii Forum &raquo;</a></p>
            </div>
            <div class="col-lg-4">
                <h2>Heading</h2>
                <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et
                    dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip
                    ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
                    fugiat nulla pariatur.</p>
                <p><a class="btn btn-default" href="http://www.yiiframework.com/extensions/">Yii Extensions &raquo;</a></p>
            </div>
        </div>
    </div>
</div>