Não consigo acessar meu site

Quando tento acessar meu site aparece esse erro:

Warning: require_once(/home2/mudeim21/public_html/wp-admin/includes/class-wp-site-health.php): failed to open stream: No such file or directory in /home2/mudeim21/public_html/wp-settings.php on line 370

Fatal error: require_once(): Failed opening required ‘/home2/mudeim21/public_html/wp-admin/includes/class-wp-site-health.php’ (include_path=’.:/opt/cpanel/ea-php72/root/usr/share/pear’) in /home2/mudeim21/public_html/wp-settings.php on line 370