Uncaught Error: Class "DOMDocument" not found
in /var/www/biggeordiegeek/public_html/wp-content/plugins/jetpack/modules/sitemaps/sitemap-buffer.php on line 114

Call stack:

1. Jetpack_Sitemap_Buffer::__construct()
   wp-content/plugins/jetpack/modules/sitemaps/sitemap-builder.php:45
2. Jetpack_Sitemap_Buffer_Empty::__construct()
   wp-content/plugins/jetpack/modules/sitemaps/sitemap-builder.php:1068
3. Jetpack_Sitemap_Builder::empty_sitemap_xml()
   wp-content/plugins/jetpack/modules/sitemaps/sitemaps.php:247
4. Jetpack_Sitemap_Manager::callback_action_catch_sitemap_urls()
   wp-includes/class-wp-hook.php:324
5. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:348
6. WP_Hook::do_action()
   wp-includes/plugin.php:517
7. do_action()
   wp-settings.php:749
8. require_once('/var/www/biggeordieg...html/wp-settings.php')
   wp-config.php:37
9. require_once('/var/www/biggeordiegeek/public_html/wp-config.php')
   wp-load.php:50
10. require_once('/var/www/biggeordiegeek/public_html/wp-load.php')
    wp-blog-header.php:13
11. require('/var/www/biggeordieg...l/wp-blog-header.php')
    index.php:17