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', '1jmf6el986m37uu9o0f1njc1k6', '18.223.211.185', '1746785661', '1746785661', '/product_info.php/info/p6926_ISO-7010-Brandschutzordnung-DIN-14096--Teil-A-.html')

[XT SQL Error]