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', '1gsle46kqjjgfbovq3tks9n7s1', '3.139.105.83', '1715788513', '1715788513', '/store/shopping_cart.php/sort/2a?osCsid=oj2hj6uun99n3ne11odo1ae4f7')

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