[TranslationDebug] workaround for getFallbackLocales.

Author: aitboudad

Command/TranslationDebugCommand.php

@@ -19,6 +19,8 @@
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Translation\MessageCatalogue;
 use Symfony\Component\Translation\Translator;
+use Symfony\Component\Translation\DataCollectorTranslator;
+use Symfony\Component\Translation\LoggingTranslator;
 
 /**
  * Helps finding unused or missing translation messages in a given locale
@@ -157,7 +159,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         // Load the fallback catalogues
         $fallbackCatalogues = array();
         $translator = $this->getContainer()->get('translator');
-        if ($translator instanceof Translator) {
+        if ($translator instanceof Translator || $translator instanceof DataCollectorTranslator || $translator instanceof LoggingTranslator) {
             foreach ($translator->getFallbackLocales() as $fallbackLocale) {
                 if ($fallbackLocale === $locale) {
                     continue;