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', '198b2cg9mb89a6u7hm3460scn6', '34.229.113.106', '1563538375', '1563538375', '/shop/product_info.php?info=p348_1-3--Kamera-SONY-Super-HAD-CCD-Kamera-520TVL-1-0-Lux.html')

[XT SQL Error]