1366 - Incorrect integer value: '' for column `hundgesund`.`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', '174345e84c48a28c1afeb2608e4ea8e0', '3.233.221.149', '1582240392', '1582240392', '/shop/shopping_cart.php')

[XT SQL Error]