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', 'e25tb1a95gpi2u4709tiv63ok2', '54.92.163.105', '1540146781', '1540146781', '/catalog/default.php?cPath=51_209&osCsid=vpio3bf85o9lb617pett4iq871')

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