Fatal error: Uncaught Error: Class 'Composer\Installers\BaseInstaller' not found in /var/www/html/wp-content/plugins/kirki/kirki-composer/composer/installers/src/Composer/Installers/SMFInstaller.php:5
Stack trace:
#0 {main}
thrown in /var/www/html/wp-content/plugins/kirki/kirki-composer/composer/installers/src/Composer/Installers/SMFInstaller.php on line 5