Fatal Error while updating

I got the beow error while updating from 12.6.3 to 13.0.3 after that i found the plugin updated but it not counting hits or visits right.
Please support.

Update failed: .wp-die-message { display: none; } Fatal error: Uncaught Error: Class 'WP_Statistics_Updates' not foundin /home/u560608005/domains/mysite.com/public_html/wp-content/plugins/wp-statistics/includes/classes/class-wp-statistics-welcome.php on line 78Call stack:WP_Statistics_Welcome::do_welcome()wp-includes/class-wp-hook.php:287WP_Hook::apply_filters()wp-includes/class-wp-hook.php:311WP_Hook::do_action()wp-includes/plugin.php:478do_action()wp-admin/includes/class-plugin-upgrader.php:371Plugin_Upgrader::bulk_upgrade()wp-admin/includes/ajax-actions.php:4452wp_ajax_update_plugin()wp-includes/class-wp-hook.php:287WP_Hook::apply_filters()wp-includes/class-wp-hook.php:311WP_Hook::do_action()wp-includes/plugin.php:478do_action()wp-admin/admin-ajax.php:176Query MonitorThere has been a critical error on your website. Please check your site admin email inbox for instructions.Learn more about debugging in WordPress.