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', 'mvsh7staoac47gcu8c5av091l5', '3.145.9.12', '1715788452', '1715788452', '/store/shopping_cart.php/sort/2a?osCsid=d6on8v3aioc90kc78r9n0qne95')

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