phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e65b6f4578e9698dcd0dce7be83c5695' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e65b6f4578e9698dcd0dce7be83c5695', -1, 1419078243, 1419078243, '3657485a', -4, 0, 0)

Line : 187
File : sessions.php