1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', '3nur9kgrclmnqjlfjpfikq70n3', '18.97.9.170', '1739816892', '1739816892', '/product_info.php/info/p6413_ISO-7010-F-001--Feuerl--scher.html')

[XT SQL Error]