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', '4m5rr7tv2q3oa4n5br2agmid75', '54.224.56.126', '1539837202', '1539837202', '/catalog/default.php?cPath=51_208&osCsid=rbairlj6lekttgj7teb1lkve83')

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