phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dd40f9e20f172f2feb1b4b50fc0503d2' 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 ('dd40f9e20f172f2feb1b4b50fc0503d2', -1, 1752752091, 1752752091, 'd849d870', -4, 0, 0)

Line : 187
File : sessions.php