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', '6ge4ndhn5uo5ehjc7mpt9p5nu3', '18.222.121.79', '1715788489', '1715788489', '/store/index.php/cPath/23/sort/2a/page/3?osCsid=n2p8qnnop1breghb63lrumjuv3')

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