1366 - Incorrect integer value: '' for column `argus_xtc`.`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', 'tti12jf3ftifbputk1nlg44f25', '34.229.113.106', '1563540210', '1563540210', '/shop/product_info.php?info=p360_1-3--Sony-CCD-Kamera-420TVL-IR.html')

[XT SQL Error]