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', 'l2aun6ntkl0njel7e1rsu2u6j2', '18.119.110.116', '1715788273', '1715788273', '/store/product_info.php/cPath/22/products_id/155?osCsid=2329jrgdnlhs8tagt14g6rggq2')

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