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', 'dtsdgm50013hc1qflkqnubrd47', '3.135.202.40', '1746946354', '1746946354', '/product_info.php?info=p634_802004-Deckel-fuer-Elektro-Futterdaempfer-160-Liter.html')

[XT SQL Error]