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', 'b7899861d240e54d1f9b76208ca9dcc3', '3.236.207.90', '1680038637', '1680038637', '/shop/index.php')

[XT SQL Error]