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', '1be52fd8c919f9523ffb7fdbd78b5efc', '3.235.228.219', '1656403921', '1656403921', '/product_info.php/info/p10_3D-Druck.html')

[XT SQL Error]