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', '9mrecb11r9m0qn062p7em0sp67', '54.198.52.82', '1537829480', '1537829480', '/catalog/default.php?cPath=46_253&osCsid=sqjturjhfvikq90kimlg92b1f1')

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