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', '2k6d0vkadd031skjf1jqimm9e4', '216.73.216.61', '1764920259', '1764920259', '/index.php/cat/c5284_Rettungszeichen.html')

[XT SQL Error]