Bom dia galera... mesmo dando um git clone no projeto o erro persiste... feito o git clone dado o composer install e update para atualizar todos os modulos e pah.. o erro fatal explode... sera versão de modulos ? segue o erro fatal mas se qqr um pergar o projeto e fizer o clone vai explodir na tela erro fatal

chicao@notechicao:~/Projetos/php/1250-composer-aula2$ php buscar-cursos.php 
PHP Fatal error:  Uncaught Error: Class 'DOMDocument' not found in /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php:1190
Stack trace:
#0 /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php(1308): Symfony\Component\DomCrawler\Crawler->parseXhtml()
#1 /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php(191): Symfony\Component\DomCrawler\Crawler->parseHtmlString()
#2 /home/chicao/Projetos/php/1250-composer-aula2/src/Buscador.php(30): Symfony\Component\DomCrawler\Crawler->addHtmlContent()
#3 /home/chicao/Projetos/php/1250-composer-aula2/buscar-cursos.php(14): Alura\BuscadorDeCursos\Buscador->buscar()
#4 {main}
  thrown in /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php on line 1190

Fatal error: Uncaught Error: Class 'DOMDocument' not found in /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php:1190
Stack trace:
#0 /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php(1308): Symfony\Component\DomCrawler\Crawler->parseXhtml()
#1 /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php(191): Symfony\Component\DomCrawler\Crawler->parseHtmlString()
#2 /home/chicao/Projetos/php/1250-composer-aula2/src/Buscador.php(30): Symfony\Component\DomCrawler\Crawler->addHtmlContent()
#3 /home/chicao/Projetos/php/1250-composer-aula2/buscar-cursos.php(14): Alura\BuscadorDeCursos\Buscador->buscar()
#4 {main}
  thrown in /home/chicao/Projetos/php/1250-composer-aula2/vendor/symfony/dom-crawler/Crawler.php on line 1190