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', 'cmk61hn3jdfc0sm9d9qthgio00', '54.156.51.193', '1537571862', '1537571862', '/catalog/create_account.php?osCsid=q025qg8ep8v2vmlql8p5b1gm27')

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