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', '8597d4p5i9nmfgkgi40963at97', '54.198.142.121', '1537923646', '1537923646', '/catalog/product_info.php?products_id=984&osCsid=upopenh317v190kv092orqbda1')

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