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', 'kqcqf5tnnus2g6sdqpq2cijcd0', '18.216.71.122', '1746784347', '1746784347', '/address_book.php')

[XT SQL Error]