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', 'b6ahnop36um417j7603k6l8qa2', '54.224.89.34', '1540193606', '1540193606', '/catalog/product_info.php?products_id=830&osCsid=ei5089g5p61anphn10032u5c14')

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