Could not insert new anti bot question registration information

DEBUG MODE

SQL Error : 1062 Duplicate entry 'aa120c2308e06e728ded3e95e7ec1428' for key 'PRIMARY'

INSERT INTO phpbb_anti_bot_quest_regconfirm (confirm_id, session_id, start_time) VALUES ('2157b0166b3d4e830080c70ce0de46ad', 'aa120c2308e06e728ded3e95e7ec1428', 1790208418)

Line : 124
File : usercp_register.php