1366 - Incorrect integer value: '' for column `hbl_shop`.`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', '688sveebcklv4730bng5qodhr4', '3.129.253.54', '1746789119', '1746789119', '/product_reviews_write.php?info=p64_800512-Dengelgeraet-Sensenschaerfer-Schlagdengler.html')

[XT SQL Error]