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', '5an6tdffnfig0rv6ubq76333r7', '18.117.169.241', '1715788555', '1715788555', '/store/shopping_cart.php/sort/2a?osCsid=urojhuok9s5tlruk2i2ri5tas5')

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