Warning: require(/home/improvem/public_html/site/wp-includes/class-wp-theme-json-schema.php): failed to open stream: No such file or directory in /home/improvem/public_html/site/wp-settings.php on line 174

Fatal error: require(): Failed opening required '/home/improvem/public_html/site/wp-includes/class-wp-theme-json-schema.php' (include_path='.:/opt/cpanel/ea-php56/root/usr/share/pear') in /home/improvem/public_html/site/wp-settings.php on line 174

Fatal error: Call to undefined function wp_is_maintenance_mode() in /home/improvem/public_html/site/wp-includes/class-wp-fatal-error-handler.php on line 35