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', '8i371sv5p7s4ld2hac1tsmqkv7', '3.16.212.224', '1746923238', '1746923238', '/product_info.php?info=p493_800093-Kartoffeldaempfer--Futterdaempfer-160-Liter--vollverzinkt.html')

[XT SQL Error]