1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', 'hf9j0d9prduisrlkq1dh9vftj3', '18.97.9.173', '1778524241', '1778524241', '/')

[XT SQL Error]