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', 'c29ktlgo0453jn02osv8p8mvs4', '3.145.188.159', '1746680892', '1746680892', '/index.php/manufacturers_id/templates/abtec_1/buttons/german/small_view.gif')

[XT SQL Error]