Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /home/projetwewv/www/licence00/monapp/vendor/symfony/flex/src/Flex.php:47 Stack trace: #0 {main} thrown in /home/projetwewv/www/licence00/monapp/vendor/symfony/flex/src/Flex.php on line 47