Fatal error: Uncaught Error: Class "WP_Sitemaps_Provider" not found in /var/lib/sites/site-1049/www/html/wp-includes/sitemaps/providers/class-wp-sitemaps-users.php:17
Stack trace:
#0 {main}
  thrown in /var/lib/sites/site-1049/www/html/wp-includes/sitemaps/providers/class-wp-sitemaps-users.php on line 17