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', '99f8d0ef71282563e868aeec98b3c1ca', '3.146.221.52', '1714074695', '1714074695', '/product_info.php?info=p317_Easy-Tunes--C-Instrumente---HOCH-.html&XTCsid=937b7cb67e424972a37875d7d9fe8a0c')

[XT SQL Error]