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', 'ithtj5lrnrjibbof6np2s8eof6', '54.224.150.24', '1540024314', '1540024314', '/catalog/product_info.php?products_id=151&osCsid=u0iei2avru639pns26fkm4trh4')

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