1366 - Incorrect integer value: '' for column `shop_db3`.`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', 'e6327b7e55203af7bf0d45d6453e0946', '35.172.193.238', '1711632455', '1711632455', '/product_info.php?info=p245_Drunt-am-Bergsee.html&XTCsid=cb0ad84d7acc90898c9ea3492fbc1557')

[XT SQL Error]