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', 'a47916985d7f7ba3acb8e4dce54730e1', '54.166.170.195', '1711661531', '1711661531', '/product_info.php?info=p41_Schoener-Abend--Polka-.html&XTCsid=2c82651c29181c0e0b67329d45f74355')

[XT SQL Error]