1062 - Duplicate entry '0' for key 'customer_id'

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('0', 'Guest', 'p5c60o87g2art0gh255k97ddm6', '18.217.110.0', '1715788565', '1715788565', '/store/shopping_cart.php/sort/2a?osCsid=2h6esqjvgpjnhap9abm6bog782')

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