Yii2 - User::identityClass должен быть установлен

Question

Я использую Dektrium Yii2-user для регистрации пользователя в шаблоне Yii2 Basic. Но я получил эту ошибку:

Я несколько раз пытался решить проблему, но не нашел выхода. Я использовал Dektrium в шаблоне Yii2 Advanced, и он отлично работает.

Web.config

<?php


$params = require(__DIR__ . '/params.php');

$config = [
'id' => 'JKKEsrms',
'basePath' => dirname(__DIR__),
'bootstrap' => [
        'log',
        [
            'class' => 'app\components\LanguageSelector',
            'supportedLanguages' => ['en'],
        ],
],
'components' => [
    'request' => [
        'cookieValidationKey' => 'JDqkJaMgIITAKcsJY6yvLQdM9jf7WghX',
    ],

    'view' => [
        'theme' => [
            'pathMap' => [
                '@dektrium/user/views' => '@app/views/user',
            ],
        ],
    ],          

    'pdf'=>[
        'class'=>'app\components\ExportToPdf',
    ],
    'excel'=>[
        'class'=>'app\components\ExportToExcel',
    ],
    'cache' => [
        'class' => 'yii\caching\FileCache',
    ],
    'getid'=>[
        'class'=>'app\components\GetUserId',
    ],
    'authManager' => [
        'class' => 'yii\rbac\DbManager',
        'defaultRoles' => ['guest'],
    ],
            'checked' => [
                'class' => 'app\components\Checked'
            ],        
    'dateformatter'=>[
        'class'=>'app\components\DateFormat',
    ],
//      'user' => [
//          'identityClass' => 'app\models\User',
//          'enableAutoLogin' => false,
//      ],

    'errorHandler' => [
        'errorAction' => 'site/error',
    ],
    'log' => [
        'traceLevel' => YII_DEBUG ? 3 : 0,
        'targets' => [
            [
                'class' => 'yii\log\FileTarget',
                'levels' => ['error', 'warning'],
            ],
        ],
    ],
    'formatter' => [
        'dateFormat' => 'dd-MM-yyyy',
        'datetimeFormat' => 'php:d-m-Y H:i:s',
        'timeFormat' => 'php:H:i:s',
        'decimalSeparator' => ',',
        'thousandSeparator' => ' ',
        'currencyCode' => 'NGN.',
        'class' => 'yii\i18n\Formatter',
    ],
        'db' => require(__DIR__ . '/db.php'),

    'assetManager' => [
        'bundles' => [
            'dmstr\web\AdminLteAsset' => [
                'skin' => 'skin-blue',
            ],
        ],
    ],         

],

'as access' => [
    'class' => 'mdm\admin\components\AccessControl',
    'allowActions' => [
        'site/*',                    
    ]
],

'aliases' => [
    '@mdm/admin' => '@vendor/mdmsoft/yii2-admin',
],     

'params' => $params,
'modules' => [

    // Yii2-admin
    //Yii2-admin Configuration Backend
    'admin' => [
        'class' => 'mdm\admin\Module',
        'controllerMap' => [
            'assignment' => [
                'class' => 'mdm\admin\controllers\AssignmentController',
                'userClassName' => 'dektrium\user\models\User',
            ],
        ],
    ],
    // Yii2-user
    'user' => [
        'class' => 'dektrium\user\Module',
        'mailer' => [
    'sender'                => '[e-mail]', // or ['[e-mail]' => 'Sender name']
    'welcomeSubject'        => 'Welcome JKK-ESRMS',
    'confirmationSubject'   => 'Confirmation JKK-ESRMS',
    'reconfirmationSubject' => 'Email change JKK-ESRMS',
    'recoverySubject'       => 'Recovery JKK-ESRMS',
    ],
    ],        

    // Configuration Yii2-user
    'user' => [
        'as backend' => 'dektrium\user\filters\BackendFilter',
        'controllers' => ['registration'], // not allowed controller in 'backend'
        'enableUnconfirmedLogin' => true,
        'confirmWithin' => 21600,
        'cost' => 12,
        'admins' => ['sysadmin'],
        // Override Model Yii2-user
        'modelMap' => [
            'Account' => 'app\models\Account',
            'LoginForm' => 'app\models\LoginForm',
            'Profile' => 'app\models\Profile',
            'RecoveryForm' => 'app\models\RecoveryForm',
            'RegistrationForm' => 'app\models\RegistrationForm',
            'ResendForm' => 'app\models\ResendForm',
            'SettingsForm' => 'app\models\SettingsForm',
            'Token' => 'app\models\Token',
            'User' => 'app\models\User',
            'UserSearch' => 'app\models\UserSearch',
        ],
        // Overide Controller Yii2-user
        'controllerMap' => [
            'profile' => 'app\controllers\user\ProfileController',
            'recovery' => 'app\controllers\user\RecoveryController',
            'registration' => 'app\controllers\user\RegistrationController',
            'security' => 'app\controllers\user\SecurityController',
            'settings' => 'app\controllers\user\SettingsController',
            'admin' => 'app\controllers\user\AdminController',
        ],
    ],        
    // End Configuration Yii2-user 

    'gridview' =>  [
        'class' => '\kartik\grid\Module'
    ],         
],
];

if (YII_ENV_DEV) {
//configuration adjustments for 'dev' environment
$config['bootstrap'][] = 'debug';
$config['modules']['debug'] = 'yii\debug\Module';

$config['components']['assetManager'] = [
    //'linkAssets' => true,
    'linkAssets' => false,
];

$config['bootstrap'][] = 'gii';
$config['modules']['gii'] = [
    'class'=>'yii\gii\Module',
    'allowedIPs'=>['127.0.0.1','192.168.1.*'],
];
}

return $config;

Что могло вызвать ошибку и как ее устранить. Я потратил целый день, пытаясь решить проблему, но не повезло. Любезно помочь. Спасибо в ожидании.