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', 'gmss84s7ndosq5lgejpr9mua33', '54.80.87.166', '1539614770', '1539614770', '/catalog/user_agreement.php?osCsid=nc6jcr8g9uualrc3vak2nm0m93')

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