1366 - Incorrect integer value: '' for column `db160153`.`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', 's0fljjr13skv56ga01pr16svo3', '18.191.254.106', '1713511821', '1713511821', '/Kerze-Windmuehle/Kerze-Windmuehle-Hellgruen::610.html')

[XT SQL Error]