BuddyPress.org

I am running a website based on buddypress plugin and Ubuntu Server. My server often crash automatically when I tried to find the culprit and check the apache log I found this error

Sat Sep 23 01:30:28.719866 2017] [:error] [pid 1440] [client 122.162.164.83:53182] WordPress database error Table 'tvfplay.wp_bp_friends' doesn't exist for query SELECT id FROM wp_bp_friends WHERE (initiator_user_id = 1 OR friend_user_id = 1) ORDER BY date_created DESC made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/themes/wplms/taxonomy-course-cat.php'), get_footer, locate_template, load_template, require_once('/themes/wplms/footer.php'), wp_footer, do_action('wp_footer'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_admin_bar_render, do_action_ref_array, WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, bp_setup_admin_bar, do_action('bp_setup_admin_bar'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, BP_Friends_Component->setup_admin_bar, friends_get_friendship_request_user_ids, BP_Friends_Friendship::get_friendship_request_user_ids, BP_Friends_Friendship::get_friend_user_ids, BP_Friends_Friendship::get_friendships, BP_Friends_Friendship::get_friendship_ids_for_user

I says wp_bp_friends table doesn’t exists.
Any help how to fix this