http error log

My error log is full of –

[Mon Sep 30 18:42:14.312967 2013] [:error] [pid 11003] [client 5.10.83.35:44556] WordPress database error Table ‘wp_t.wp_4_ratings’ doesn’t exist for query SELECT rating_username, rating_rating, rating_ip FROM wp_4_ratings WHERE rating_postid = 18 made by require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/twentythirteen/tag.php’), the_post, WP_Query->the_post, do_action_ref_array, call_user_func_array, get_comment_authors_ratings

I run a multi site installation. However, the ratings seem to work.

http://wordpress.org/plugins/wp-postratings/