Fatal error: Uncaught Error: Class 'WP_Sitemaps_Provider' not found in /home/uiimedu/public_html/wpuiim2020/wp-includes.bak/sitemaps/providers/class-wp-sitemaps-taxonomies.php:17
Stack trace:
#0 {main}
thrown in /home/uiimedu/public_html/wpuiim2020/wp-includes.bak/sitemaps/providers/class-wp-sitemaps-taxonomies.php on line 17