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', '3262408b438e5cb92873ced5a4223900', '18.116.86.132', '1732270298', '1732270298', '/shop/product_info.php/info/p2_BIO---Dinkel---Knoblauch.html')

[XT SQL Error]