How to do basic authentication in Yii2 REST api - rest

Question

I have tried this, but it does not help me: Yii2 REST API BasicAuth not working
Here is what I did:
I have BaseController and DocumentController extending it.
in BaseController I have this code:
public function behaviors()
{
$behaviors = parent::behaviors();
$behaviors['contentNegotiator'] = [
'class' => 'yii\filters\ContentNegotiator',
'formats' => [
'application/json' => Response::FORMAT_JSON,
]
];
$behaviors['authenticator'] = [
'class' => HttpBasicAuth::className(),
'auth' => [$this, 'authenticate']
];
return $behaviors;
}
/**
* Finds user by username and password
*
* #param string $username
* #param string $password
* #return static|null
*/
public function authenticate($username, $password)
{
// username, password are mandatory fields
if(empty($username) || empty($password)) {
return null;
}
// get user using requested email
$user = User::findByUsername($username);
// if no record matching the requested user
if(empty($user)) {
return null;
}
// if password validation fails
if(!User::validatePassword($password)) {
return null;
}
// if user validates (both user_email, user_password are valid)
return $user;
}
When I try to visit my api: localhost/api/documents/5
I get this error: Getting unknown property: app\\controllers\\DocumentController::password_hash
What I am supposed to do to make this thing work ? I just do not understand what yii wants from me anymore.
EDIT: full error :
{"name":"Unknown Property","message":"Getting unknown property: app\\controllers\\DocumentController::password_hash","code":0,"type":"yii\\base\\UnknownPropertyException","file":"/var/www/html/api/_protected/vendor/yiisoft/yii2/base/Component.php","line":143,"stack-trace":["#0 /var/www/html/api/_protected/models/UserIdentity.php(129): yii\\base\\Component->__get('password_hash')","#1 /var/www/html/api/_protected/controllers/AppController.php(58): app\\models\\UserIdentity->validatePassword('wspass')","#2 [internal function]: app\\controllers\\AppController->authenticate('wsuser', 'wspass')","#3 /var/www/html/api/_protected/vendor/yiisoft/yii2/filters/auth/HttpBasicAuth.php(68): call_user_func(Array, 'wsuser', 'wspass')","#4 /var/www/html/api/_protected/vendor/yiisoft/yii2/filters/auth/AuthMethod.php(60): yii\\filters\\auth\\HttpBasicAuth->authenticate(Object(yii\\web\\User), Object(yii\\web\\Request), Object(yii\\web\\Response))","#5 /var/www/html/api/_protected/vendor/yiisoft/yii2/base/ActionFilter.php(71): yii\\filters\\auth\\AuthMethod->beforeAction(Object(yii\\rest\\IndexAction))","#6 [internal function]: yii\\base\\ActionFilter->beforeFilter(Object(yii\\base\\ActionEvent))","#7 /var/www/html/api/_protected/vendor/yiisoft/yii2/base/Component.php(541): call_user_func(Array, Object(yii\\base\\ActionEvent))","#8 /var/www/html/api/_protected/vendor/yiisoft/yii2/base/Controller.php(269): yii\\base\\Component->trigger('beforeAction', Object(yii\\base\\ActionEvent))","#9 /var/www/html/api/_protected/vendor/yiisoft/yii2/web/Controller.php(108): yii\\base\\Controller->beforeAction(Object(yii\\rest\\IndexAction))","#10 /var/www/html/api/_protected/vendor/yiisoft/yii2/base/Controller.php(152): yii\\web\\Controller->beforeAction(Object(yii\\rest\\IndexAction))","#11 /var/www/html/api/_protected/vendor/yiisoft/yii2/base/Module.php(454): yii\\base\\Controller->runAction('index', Array)","#12 /var/www/html/api/_protected/vendor/yiisoft/yii2/web/Application.php(84): yii\\base\\Module->runAction('document/index', Array)","#13 /var/www/html/api/_protected/vendor/yiisoft/yii2/base/Application.php(375): yii\\web\\Application->handleRequest(Object(yii\\web\\Request))","#14 /var/www/html/api/index.php(12): yii\\base\\Application->run()","#15 {main}"]}