Could not insert new anti bot question registration information

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f3a1af48065d0ec740c651ad351872dc' for key 'PRIMARY'

INSERT INTO phpbb_anti_bot_quest_regconfirm (confirm_id, session_id, start_time) VALUES ('7fece5d08dcde81bc0753f7bc9907dce', 'f3a1af48065d0ec740c651ad351872dc', 1790504648)

Line : 124
File : usercp_register.php