phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5d0ddac96d8d40c7ab1126239ecb68e2' 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 ('5d0ddac96d8d40c7ab1126239ecb68e2', -1, 1419116793, 1419116793, '36a7b6c9', 9, 0, 0)

Line : 187
File : sessions.php