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', '2afq8ejghcq871eai54n8kdrq7', '18.190.158.12', '1746784409', '1746784409', '/product_info.php/info/p764_ISO-7010-W-026--Warnung-vor-Gefahren-durch-Batterien.html')

[XT SQL Error]