Fatal error: Uncaught Error: Interface "Monolog\Formatter\FormatterInterface" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\monolog-bridge\Formatter\VarDumperFormatter.php:20 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\monolog-bridge\Formatter\VarDumperFormatter.php on line 20