Fatal error: Uncaught Error: Class "Composer\DependencyResolver\Operation\SolverOperation" not found in /home/gingerbrup/gardien/vendor/composer/composer/src/Composer/DependencyResolver/Operation/UpdateOperation.php:23 Stack trace: #0 {main} thrown in /home/gingerbrup/gardien/vendor/composer/composer/src/Composer/DependencyResolver/Operation/UpdateOperation.php on line 23