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', 'os8hn4ped657c1p3hrevj73nh1', '54.92.190.11', '1537328622', '1537328622', '/catalog/privacy.php?osCsid=abj3lncob7t2muta8gk9ilmv56')

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