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', '14v05qrs88f3vhjlmpc3a4k3h4', '54.198.142.121', '1537419351', '1537419351', '/catalog/product_info.php?products_id=830&osCsid=go2a6vh4k562stpmjrtjv6ug45')

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