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', '948k4goooue5l4iotajod90sq4', '216.73.216.116', '1762010101', '1762010101', '/product_info.php/info/p6915_10-Jahres-Rauchmelder.html')

[XT SQL Error]