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', 'g4hulemd9lmjd23uqaomdk3lc7', '54.198.52.82', '1537610098', '1537610098', '/catalog/product_info.php?products_id=153&osCsid=ho0r7d6g0974vnav47bh00s705')

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