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', '8r29fcq8vkb8ko99ge5lq4v7v7', '18.188.146.77', '1715788259', '1715788259', '/store/shopping_cart.php/sort/2a?osCsid=t3paptsjf8477so9ed99n831l2')

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