phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dfd95d4ba78e02e8008af9a4d3d6d8c5' 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 ('dfd95d4ba78e02e8008af9a4d3d6d8c5', -1, 1728679496, 1728679496, '03ef03c4', 0, 0, 0)

Line : 187
File : sessions.php