phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ba7576afd01a805b2b9fdb248e68eecc' 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 ('ba7576afd01a805b2b9fdb248e68eecc', -1, 1419253106, 1419253106, '36f27e7e', -4, 0, 0)

Line : 187
File : sessions.php