fix the issue

agreement.module

@@ -28,7 +28,7 @@ function agreement_user_update(EntityInterface $account) {
           isset($account->original) &&
           $account->checkExistingPassword($account->original) &&
           $current_user->id() === $account->id()) {
-        \Drupal::service('agreement.handler')->agree($account, $agreement, 2);
+        \Drupal::service('agreement.handler')->agree($agreement, $account, 2);
       }
     }
   }