1366 - Incorrect integer value: '' for column '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', 'ec8855ee664ee5bc6d3ded960d0daf9d', '13.59.61.119', '1715183875', '1715183875', '/product_info.php/info/p7_Phacelia.html')

[XT SQL Error]