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', 'jm72grm91kgl9gc6n8td32fjc4', '54.198.142.121', '1537918928', '1537918928', '/catalog/default.php?cPath=57&osCsid=k5n63n378pq23jd2o10mk7eiq1')

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