phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '831f6779e33dc1d0953e3ce8d78a5df4' 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 ('831f6779e33dc1d0953e3ce8d78a5df4', -1, 1715900396, 1715900396, '0393514c', 0, 0, 0)

Line : 187
File : sessions.php