ntinos on "wp-admin error_log file getting huge (one error)"

Hi everybody i'm new here and i hope i post this right here.
I search in google for the error in the file but i found nothing.
I use the wooCommerce and wpml and the wpml-string-translation plugin
i'm not sure if the error is from wordpress or from the other plugins. I hope sameone knows this error or can tell me something about it.

here the error in the file (sql)...

WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 6 for query SELECT postmeta.post_id AS product_id
                FROM wp_postmeta AS postmeta
                    LEFT JOIN wp_posts AS products ON ( products.ID = postmeta.post_id )
                WHERE postmeta.meta_key LIKE 'attribute_%'
                    AND postmeta.meta_value = 'coffe'
                    AND products.post_parent =  made by include('wp-admin/edit-form-advanced.php'), do_meta_boxes, call_user_func, woocommerce_product_data_box, do_action('woocommerce_product_write_panels'), call_user_func_array, variable_product_type_options, include('/plugins/woocommerce/admin/post-types/writepanels/variation-admin-html.php'), apply_filters('woocommerce_variation_option_name'), call_user_func_array, display_price_in_variation_option_name

i'm sorry for my english... i'm not good in english. thx