phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2997e9ec6841dcd86c2a38765f681caf' 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 ('2997e9ec6841dcd86c2a38765f681caf', -1, 1227387566, 1227387566, '26673f3b', 3, 0, 0)

Line : 193
File : sessions.php