1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', 'v22fc07dca5q6e38mp013g3cb6', '216.73.216.40', '1766769138', '1766769138', '/index.php?cat=c4_Afrikanische-Stoffe.html')

[XT SQL Error]