phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2f9dff1d440717f485434a38b178c26b' 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 ('2f9dff1d440717f485434a38b178c26b', -1, 1714387172, 1714387172, '12d9dc72', -4, 0, 0)

Line : 187
File : sessions.php