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', '89523c18c59c988164b1790299a19a78', '18.218.61.16', '1713913084', '1713913084', '/index.php/language/de/cat/c42_Vector-Maps.html')

[XT SQL Error]