phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4271a8fcdf86259b7efdb37a4d7e821e' 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 ('4271a8fcdf86259b7efdb37a4d7e821e', -1, 1765836808, 1765836808, 'd849d868', 2, 0, 0)

Line : 187
File : sessions.php