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', '74pnekbk7u5hg3e3kqqu2j3285', '216.73.216.6', '1752294698', '1752294698', '/product_info.php/info/p671_Brandschutzordnung-DIN-14096-1--Teil-A----Brandschutz-Zeichen.html')

[XT SQL Error]