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', '38d4oe683cjc8jlebhisd8sgp5', '54.80.188.87', '1540125103', '1540125103', '/catalog/default.php?cPath=51&osCsid=1ib7ie6tf319r3je9p9tmoha55')

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