1366 - Incorrect integer value: '' for column `jugglux_jstore`.`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', 'm5alcgng100oabqc0n499ev9p1', '34.231.109.238', '1594113899', '1594113899', '/index.php/cat/c348_Diabolo-Tasche.html')

[XT SQL Error]