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', 'b5i0ctbkv1pk2bteg3inents53', '34.231.109.238', '1594112641', '1594112641', '/shop_content.php/language/de/coID/8/product/Sitemap')

[XT SQL Error]