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', 'd3234e3e617bfbfc806f95f1355cab22', '44.204.218.79', '1711676967', '1711676967', '/product_info.php?info=p245_Drunt-am-Bergsee.html&XTCsid=9ed062a1d997e94e67f071e9bc3ac71b')

[XT SQL Error]