Could not insert new anti bot question registration information

DEBUG MODE

SQL Error : 1062 Duplicate entry '309b8cae66e64bc3a6884b624b209f8f' for key 'PRIMARY'

INSERT INTO phpbb_anti_bot_quest_regconfirm (confirm_id, session_id, start_time) VALUES ('c785ea69c84aeeb082e018dd3d514014', '309b8cae66e64bc3a6884b624b209f8f', 1790404604)

Line : 124
File : usercp_register.php