1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', 'bqs3giu1fa2r7v7t24a9k6dgp4', '216.73.216.80', '1761028999', '1761028999', '/index.php?cat=c56_Einkaufskorb-rd-double-weaving.html')

[XT SQL Error]