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', 'ckos2r8l3bak4hdlf8so0si445', '54.81.150.27', '1537446057', '1537446057', '/catalog/product_info.php?products_id=347&osCsid=hklnem6aspff1vl81kgnlhof01')

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