Fatal error: Uncaught Error: Class "Composer\Installers\BaseInstaller" not found in /home/yukonw3creatives/public_html/100/vendor/composer/installers/src/Composer/Installers/SMFInstaller.php:4 Stack trace: #0 {main} thrown in /home/yukonw3creatives/public_html/100/vendor/composer/installers/src/Composer/Installers/SMFInstaller.php on line 4