phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9824b5c670cdcf19d2e9540e7a1f820f' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9824b5c670cdcf19d2e9540e7a1f820f', -1, 1768354448, 1768354448, '7f000001', 1, 0, 0)

Line : 187
File : sessions.php