plss help my website shows white screen error and also say Warning : require(/home/vol10_6/infinityfree.com/if0_34492749/htdocs/wp-includes/sitemaps/class-wp-sitemaps.php): failed to open stream: No such file or directory in /home/vol10_6/infinityfree.com/if0_34492749/htdocs/wp-settings.php on line 305
how to solve this plss help