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', 'msnodn3dtl7ljgkeel8ve07fn7', '54.224.56.126', '1540285560', '1540285560', '/catalog/product_info.php?products_id=148&osCsid=e1lueb8f5do2qoibl3qq8s4e07')

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