phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'fd1f1426f68990d51096b1370c315a12' for key 1

INSERT INTO fofpt_12_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('fd1f1426f68990d51096b1370c315a12', -1, 1268353428, 1268353428, '0ab0a7b9', 3, 0, 0)

Line : 187
File : sessions.php