1366 - Incorrect integer value: '' for column `drucktiv`.`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', 'qm8h6mq0di75b6foujltacim30', '3.144.3.100', '1743732897', '1743732897', '/')

[XT SQL Error]