#Needs work

I ran into this today.

I think we shouldn't increment if we can't load the language:

 $configurable_language = ConfigurableLanguage::load($language->getId());
        if ($configurable_language === null) {
          continue;
        }
        // Update system languages weight.
        $max_weight++;
        $configurable_language
          ->setWeight($max_weight)
          ->save();