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', 'g86ivj8m03vc10b7iek6fnu8f1', '54.162.133.222', '1539972128', '1539972128', '/catalog/default.php?cPath=49&osCsid=4m52ntd37ks9jmga4d29vrli90')

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