1366 - Incorrect integer value: '' for column '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', 'u6epiovhc7nbmu6t8lek3c8jd5', '54.158.199.217', '1537897424', '1537897424', '/catalog/product_info.php?products_id=461&osCsid=8tdii0998tqq1tk2s4ls3l8ga6')

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