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', 'mknq7rba97i5ae2vfq7f8na3j7', '3.15.149.254', '1746946077', '1746946077', '/product_info.php/info/p6581_ISO-7010-P-003-KNS--Feuer--offenes-Licht-und-Rauchen-verboten.html')

[XT SQL Error]