Fatal error: Uncaught Error: Interface 'Composer\DependencyResolver\Operation\OperationInterface' not found in /var/www/legtux.org/users/weboconsulting/www/vendor/symfony/flex/src/InformationOperation.php:11 Stack trace: #0 {main} thrown in /var/www/legtux.org/users/weboconsulting/www/vendor/symfony/flex/src/InformationOperation.php on line 11