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', '8812ra8tg1bvavp3p8r8j72n03', '54.166.207.223', '1539819633', '1539819633', '/catalog/password_forgotten.php?osCsid=d4ngsa8o65960em7hi775spb82')

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