1366 - Incorrect integer value: '' for column `dogsdream`.`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', 'f8571b7378d6a3a0f297d31f030caa88', '3.237.91.98', '1711664973', '1711664973', '/shop/product_info.php/info/p6_BIO---Korianderherzchen-Gro-packung.html')

[XT SQL Error]