无法在yii1.1中解析请求“user”

Question

I am new with PHP and trying to create yii App and I have to use yii1.1

I am following https://www.yiiframework.com/doc/guide/1.1/en/quickstart.first-app

I generated Gii and after I got to the last step which is "Accessing CRUD Pages", I faced this error:

Unable to resolve the request "user"

I checked the User file and its name. While the database is succesfully connected.

And here is the code of User file where its directory is : testdrive1/protected/models/User.php

<?php
/**
 * This is the model class for table "tbl_user".
 *
 * The followings are the available columns in table 'tbl_user':
 * @property integer $id
 * @property string $username
 * @property string $password
 * @property string $email
 * @property string $image
 * @property double $lat
 * @property double $lng
 */
class User extends CActiveRecord
{
    /**
     * @return string the associated database table name
     */
    public function tableName()
    {
        return 'tbl_user';
    }

    /**
     * @return array validation rules for model attributes.
     */
    public function rules()
    {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            array('username, password, email', 'required'),
            array('lat, lng', 'numerical'),
            array('username, password, email', 'length', 'max'=>128),
            array('image', 'length', 'max'=>100),
            // The following rule is used by search().
            // @todo Please remove those attributes that should not be searched.
            array('id, username, password, email, image, lat, lng', 'safe', 'on'=>'search'),
        );
    }

    /**
     * @return array relational rules.
     */
    public function relations()
    {
        // NOTE: you may need to adjust the relation name and the related
        // class name for the relations automatically generated below.
        return array(
        );
    }

    /**
     * @return array customized attribute labels (name=>label)
     */
    public function attributeLabels()
    {
        return array(
            'id' => 'ID',
            'username' => 'Username',
            'password' => 'Password',
            'email' => 'Email',
            'image' => 'Image',
            'lat' => 'Lat',
            'lng' => 'Lng',
        );
    }

    /**
     * Retrieves a list of models based on the current search/filter conditions.
     *
     * Typical usecase:
     * - Initialize the model fields with values from filter form.
     * - Execute this method to get CActiveDataProvider instance which will filter
     * models according to data in model fields.
     * - Pass data provider to CGridView, CListView or any similar widget.
     *
     * @return CActiveDataProvider the data provider that can return the models
     * based on the search/filter conditions.
     */
    public function search()
    {
        // @todo Please modify the following code to remove attributes that should not be searched.

        $criteria=new CDbCriteria;

        $criteria->compare('id',$this->id);
        $criteria->compare('username',$this->username,true);
        $criteria->compare('password',$this->password,true);
        $criteria->compare('email',$this->email,true);
        $criteria->compare('image',$this->image,true);
        $criteria->compare('lat',$this->lat);
        $criteria->compare('lng',$this->lng);

        return new CActiveDataProvider($this, array(
            'criteria'=>$criteria,
        ));
    }

    /**
     * Returns the static model of the specified AR class.
     * Please note that you should have this exact method in all your CActiveRecord descendants!
     * @param string $className active record class name.
     * @return User the static model class
     */
    public static function model($className=__CLASS__)
    {
        return parent::model($className);
    }
}