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', 'qdaf2r2l6psqtl2me3cae3p040', '54.224.166.141', '1537628583', '1537628583', '/catalog/product_info.php?products_id=144&osCsid=93d2ucl1m1ggqhf3e5nbmtonj6')

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