1366 - Incorrect integer value: '' for column `abtecsho_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', 'sispg9edbd2dci72a92d0fti25', '18.97.9.171', '1750466590', '1750466590', '/product_info.php/info/p6147_Textschild--Brandschutzt--r-verkeilen--verstellen--festbinden----.html')

[XT SQL Error]