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', 'e7gkujv0go6fii10feeeuc8qf0', '54.224.89.34', '1539654273', '1539654273', '/catalog/product_info.php?products_id=164&osCsid=fbl9ifvmv7vtkvvcr8ei3doj81')

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