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', '084a3d710vpt9eedmi9mf051i2', '54.166.203.17', '1537349305', '1537349305', '/catalog/product_info.php?products_id=472&osCsid=t2t0ami1ie3s69bp1j36r92p81')

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