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', '1eh12b7ebmn3bgir83kmnpua92', '54.224.166.141', '1537656970', '1537656970', '/catalog/allprods.php?osCsid=9mtneh2b3d9ng3123herhddps0')

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