phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9d36a25193c685bccb7536de22b001bb' 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 ('9d36a25193c685bccb7536de22b001bb', -1, 1414775297, 1414775297, '36517bd8', 24, 0, 0)

Line : 292
File : sessions.php