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', 'vf9dudfmss3nsf2ulaovr6lcs4', '54.225.26.44', '1540273571', '1540273571', '/catalog/default.php?cPath=50_133&osCsid=hdu5vkilg3o0qa1treq66p3ho7')

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