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', 'aafkc5rbrl4dijf9r8i73shk70', '54.198.195.11', '1534324779', '1534324779', '/catalog/contact_us.php?osCsid=9vuirppg9bo88k01cjdu7pvk43')

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