1366 - Incorrect integer value: '' for column `schablone_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', 'fab3121735b23c7b0bbe47c7663b844a', '35.175.107.142', '1701388994', '1701388994', '/shop/index.php')

[XT SQL Error]