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', 'v5v2s0lrh0isg79c8m6s2tsio1', '216.73.216.53', '1751760367', '1751760367', '/product_info.php/info/p6299_BGV-A8---Verhalten-im-Alarmfall-mit-Symbolen.html')

[XT SQL Error]