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', 'b6en0ce1rkn2k440m4uh981vr2', '216.73.216.42', '1761403106', '1761403106', '/index.php?cat=c4_Afrikanische-Stoffe.html')

[XT SQL Error]