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', '7s4bluodgrngnb6cr8uo8k6kd2', '54.166.203.17', '1537675414', '1537675414', '/catalog/default.php?cPath=29&osCsid=8aosvbnconr5alfaaajdsmp0n3')

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