Fatal error: Uncaught Error: Class "RankMath\Sitemap\Sitemap_Index" not found in /htdocs/wp-content/plugins/seo-by-rank-math/includes/modules/sitemap/class-sitemap.php:51
Stack trace:
#0 /htdocs/wp-content/plugins/seo-by-rank-math/includes/module/class-manager.php(487): RankMath\Sitemap\Sitemap->__construct()
#1 /htdocs/wp-content/plugins/seo-by-rank-math/includes/module/class-manager.php(467): RankMath\Module\Manager->load_module('sitemap', Object(RankMath\Module\Module))
#2 /htdocs/wp-includes/class-wp-hook.php(324): RankMath\Module\Manager->load_modules('')
#3 /htdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#4 /htdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /htdocs/wp-settings.php(559): do_action('plugins_loaded')
#6 /htdocs/wp-config.php(108): require_once('/htdocs/wp-sett...')
#7 /htdocs/wp-load.php(50): require_once('/htdocs/wp-conf...')
#8 /htdocs/wp-blog-header.php(13): require_once('/htdocs/wp-load...')
#9 /htdocs/index.php(17): require('/htdocs/wp-blog...')
#10 {main}
thrown in /htdocs/wp-content/plugins/seo-by-rank-math/includes/modules/sitemap/class-sitemap.php on line 51