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', '474038617fa32604b5e25a8706b81191', '54.88.179.12', '1711710339', '1711710339', '/shop_content.php?coID=2&XTCsid=6f15378daa624dbfd839586482611826')

[XT SQL Error]