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', 'oh8bghggb9rgb0isqspagpi7m5', '3.141.35.52', '1746936279', '1746936279', '/product_info.php?info=p615_806316-Deckel-fuer-Bruehkessel-150-Liter.html')

[XT SQL Error]