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', '042d3j484s82utafvm5b1ce7o5', '54.80.87.166', '1540039162', '1540039162', '/catalog/product_info.php?products_id=817&osCsid=8h61juh94c2eig630d3h6n2280')

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