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', '3b4a32e6e8d8d4758940d1ca13eedbbf', '216.73.216.121', '1751736078', '1751736078', '/index.php/cat/c40_Map-Konfigurator.html')

[XT SQL Error]