phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3d4de9a31eee822299039afa80ede0d4' 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 ('3d4de9a31eee822299039afa80ede0d4', -1, 1537752758, 1537752758, '36a2efe9', 57, 0, 0)

Line : 198
File : sessions.php