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', 'hmlkmtttu23hc0t7bia7ubmig6', '18.219.250.4', '1746948137', '1746948137', '/product_info.php/info/p6332_KNS-Textschild--Exit.html')

[XT SQL Error]