Help me pinpoint what is wrong?

Hi all,

I get my error_log filled (up to fill my whole disk space) with entries as such:

[09-Sep-2017 09:18:25 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_share_params LIMIT 1 από require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_feed, do_action('do_feed_rss2'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, do_feed_rss2, load_template, require_once('wp-includes/feed-rss2.php'), the_excerpt_rss, get_the_excerpt, apply_filters('get_the_excerpt'), WP_Hook->apply_filters, call_user_func_array, wp_trim_excerpt, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, hugeit_share_my_the_content_filter, hugeit_share_buttons, hugeit_share_show_published_share_buttons_1, hugeit_share_front_end_share_buttons, hugeit_share_show_hide_shares_count
[09-Sep-2017 09:18:25 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_shar[13-Sep-2017 01:56:32 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_share_params LIMIT 1 από require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_feed, do_action('do_feed_rss2'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, do_feed_rss2, load_template, require_once('wp-includes/feed-rss2.php'), the_excerpt_rss, get_the_excerpt, apply_filters('get_the_excerpt'), WP_Hook->apply_filters, call_user_func_array, wp_trim_excerpt, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, hugeit_share_my_the_content_filter, hugeit_share_buttons, hugeit_share_show_published_share_buttons_1, hugeit_share_front_end_share_buttons, hugeit_share_show_hide_shares_count
[13-Sep-2017 01:56:32 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_share_params LIMIT 1 από require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_feed, do_action('do_feed_rss2'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, do_feed_rss2, load_template, require_once('wp-includes/feed-rss2.php'), the_excerpt_rss, get_the_excerpt, apply_filters('get_the_excerpt'), WP_Hook->apply_filters, call_user_func_array, wp_trim_excerpt, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, hugeit_share_my_the_content_filter, hugeit_share_buttons, hugeit_share_show_published_share_buttons_1, hugeit_share_front_end_share_buttons, hugeit_share_show_hide_shares_count
[13-Sep-2017 01:56:32 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_share_params LIMIT 1 από require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_feed, do_action('do_feed_rss2'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, do_feed_rss2, load_template, require_once('wp-includes/feed-rss2.php'), get_the_content_feed, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, hugeit_share_my_the_content_filter, hugeit_share_buttons, hugeit_share_show_published_share_buttons_1, hugeit_share_front_end_share_buttons, hugeit_share_show_hide_shares_count
[13-Sep-2017 01:56:32 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_share_params LIMIT 1 από require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_feed, do_action('do_feed_rss2'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, do_feed_rss2, load_template, require_once('wp-includes/feed-rss2.php'), get_the_content_feed, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, hugeit_share_my_the_content_filter, hugeit_share_buttons, hugeit_share_show_published_share_buttons_1, hugeit_share_front_end_share_buttons, hugeit_share_show_hide_shares_count
[13-Sep-2017 01:56:32 UTC] Σφάλμα Unknown column 'shares_count' in 'field list' βάσης δεδομένων WordPress για αίτηση SELECT shares_count FROM blog_huge_it_share_params LIMIT 1 από require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_feed, do_action('do_feed_rss2'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, do_feed_rss2, load_template, require_once('wp-includes/feed-rss2.php'), the_excerpt_rss, get_the_excerpt, apply_filters('get_the_excerpt'), WP_Hook->apply_filters, call_user_func_array, wp_trim_excerpt, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, hugeit_share_my_the_content_filter, hugeit_share_buttons, hugeit_share_show_published_share_buttons_1, hugeit_share_front_end_share_buttons, hugeit_share_show_hide_shares_count

Can someone help me where to look?
I use only a preset theme and very few add ins.