Fatal error: Uncaught Error: Class "Symfony\Flex\Configurator\AbstractConfigurator" not found in I:\www\picman\vendor\symfony\flex\src\Configurator\AddLinesConfigurator.php:14 Stack trace: #0 {main} thrown in I:\www\picman\vendor\symfony\flex\src\Configurator\AddLinesConfigurator.php on line 14