1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'f37507e0cc1dac8ac7ffdebbefb6e898', '18.221.187.121', '1713900622', '1713900622', '/product_info.php/language/de/info/p4016_Erde-Reliefkarte.html')

[XT SQL Error]