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', 'c7iklt9mun2jppurvh7lddmnk6', '34.229.113.106', '1563541035', '1563541035', '/shop/product_info.php?info=p692_WDR-480-TVL-Standard-Kamera-110-240-VAC.html')

[XT SQL Error]