Correctif

frontend/controllers/SiteController.php

@@ -406,7 +406,7 @@ class SiteController extends FrontendController
 
             if ($signupForm->load($this->getRequest()->post())
                 && ($user = $signupForm->signup())
-                && $this->getUserCurrent()->login($user)) {
+                && Yii::$app->user->login($user)) {
 
                     $this->redirect($returnUrl);
             }

producer/controllers/OrderController.php

@@ -744,8 +744,9 @@ class OrderController extends ProducerBaseController
     {
         $userProducerManager = $this->getUserProducerManager();
         $producerManager = $this->getProducerManager();
-
+        
         $user = GlobalParam::getCurrentUser();
+        
         if($user) {
             $userProducer = $userProducerManager->findOneUserProducer($user, $producer);
             if (!$userProducer) {