phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6217392167b0f4b8928bfd7711ba6147' for key 'PRIMARY'

INSERT INTO mcanimephpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6217392167b0f4b8928bfd7711ba6147', -1, 1406886543, 1406886543, '365277ee', -1, 0, 0)

Line : 203
File : sessions.php