Fatal error: Uncaught Error: Class "Composer\Installers\BaseInstaller" not found in /home/almannaeiadv/public_html/wp-content-old/plugins/sitepress-multilingual-cms/embedded/composer/installers/src/Composer/Installers/Symfony1Installer.php:9 Stack trace: #0 {main} thrown in /home/almannaeiadv/public_html/wp-content-old/plugins/sitepress-multilingual-cms/embedded/composer/installers/src/Composer/Installers/Symfony1Installer.php on line 9