1366 - Incorrect integer value: '' for column `hbl_shop`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'r439su9jpo3df2ec4f8vej0lm5', '52.14.93.216', '1747128774', '1747128774', '/product_info.php?info=p583_805265-Schneeschieberblatt.html')

[XT SQL Error]