fix: monitor logging

src/User/Framework/Entity/User.php

@@ -153,13 +153,14 @@ class User implements UserInterface, PasswordAuthenticatedUserInterface
         return $this->userPreferences;
     }
 
-    public function getUserPreference(string $preferenceName)
+    public function getUserPreference(string $preferenceName): ?UserPreference
     {
         foreach ($this->userPreferences as $userPreference) {
             if ($userPreference->getPreference()->getName() === $preferenceName) {
-                return $userPreference->getPreference();
+                return $userPreference;
             }
         }
+        return null;
     }
 
     public function hasUserPreference(string $preferenceName): bool