phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'eb4bcd3f71ed81070801242a0b09b522' 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 ('eb4bcd3f71ed81070801242a0b09b522', -1, 1414749008, 1414749008, '36a74b9b', -1, 0, 0)

Line : 187
File : sessions.php