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', '7oi2uursjmpki14in90i2o9ct0', '18.222.93.141', '1746788434', '1746788434', '/index.php?cat=c5145_Langnachleuchtende-Schilder.html')

[XT SQL Error]