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', '0tfd0kk6g5pgd383crbcm4o2h5', '54.198.52.82', '1537749467', '1537749467', '/catalog/default.php?cPath=47&osCsid=jbj0ki7uhu4vcjliadiltc9ge2')

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