Fatal error: Uncaught Error: Interface "Symfony\Component\Translation\TranslatorInterface" not found in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\translation\DataCollectorTranslator.php:23 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\translation\DataCollectorTranslator.php on line 23