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', '8cc8a0b5abc6a229e0cdfadad3c954c0', '3.236.214.123', '1711631441', '1711631441', '/product_info.php/language/en/info/p3109_Schweden-Reliefkarte.html')

[XT SQL Error]