1366 - Incorrect integer value: '' for column `dogsdream`.`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', 'cbb01c8b7fb586bcf21bede94bbaf1e9', '18.191.165.149', '1732270899', '1732270899', '/shop/product_info.php/info/p9_BIO---Moehrenkuchen.html')

[XT SQL Error]