Fatal error: Uncaught Error: Class "Composer\Installers\BaseInstaller" not found in C:\Apache24\htdocs\cms_upgrade\vendor\drupal\console-extend-plugin\src\DrupalConsoleInstaller.php:11 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\drupal\console-extend-plugin\src\DrupalConsoleInstaller.php on line 11