1366 - Incorrect integer value: '' for column `shop_db3`.`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', 'f97e67ef8c6ed3f0014c085067b580f5', '18.188.66.13', '1713504473', '1713504473', '/product_info.php?info=p318_Easy-Tunes--Bass-Instrumente-.html&XTCsid=638bbe3e68bb73ad3db5aa2ad24a3591')

[XT SQL Error]