1366 - Incorrect integer value: '' for column `jugglux_jstore`.`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', 'g4mtmof2tqbgqsjjlb95b2tje6', '34.204.187.106', '1594504415', '1594504415', '/shop_content.php/coID/1/product/Liefer--und-Versandkosten')

[XT SQL Error]