ensure profile

src/User/Model/User.php

@@ -90,6 +90,19 @@ class User extends ActiveRecord implements IdentityInterface
         return parent::beforeSave($insert);
     }
 
+    /**
+     * @inheritdoc
+     */
+    public function afterSave($insert, $changedAttributes)
+    {
+        parent::afterSave($insert, $changedAttributes);
+
+        if ($insert && $this->profile === null) {
+            $profile = $this->make(Profile::class);
+            $profile->link('user', $this);
+        }
+    }
+
     /**
      * {@inheritdoc}
      */