Username nebude email

LoginOIDC/Controller.php

@@ -231,7 +231,7 @@ class Controller extends \Piwik\Plugin\Controller
                         throw new Exception(Piwik::translate("LoginOIDC_ExceptionUserNotFoundAndNoEmail"));
                     }
 
-                    $matomoUserLogin = $result->email;
+                    $matomoUserLogin = $result->preferred_username;
                     // Set an invalid pre-hashed password, to block the user from logging in by password
                     Access::getInstance()->doAsSuperUser(function () use ($matomoUserLogin, $result) {
                         UsersManagerApi::getInstance()->addUser($matomoUserLogin,