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', '1a2b38ed589c3782e09eb3ac7b50fc2e', '216.73.216.53', '1752096141', '1752096141', '/products_new.php/language/en')

[XT SQL Error]