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', 'hahd7v4kecu6je4u8r8qid7tl0', '54.162.159.33', '1537510043', '1537510043', '/catalog/product_info.php?products_id=409&osCsid=7td8vi8b1amijreodo2idpvb03')

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