1366 - Incorrect integer value: '' for column `ngtkeZ_web1104_2`.`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', 'tj9joshmik6t9g0ld2olvhuk82', '3.144.187.103', '1714145843', '1714145843', '/content/de/Unsere-AGBs.html')

[XT SQL Error]