phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9ef4a1f283511f0343dbbe9ad7cf0fff' 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 ('9ef4a1f283511f0343dbbe9ad7cf0fff', -1, 1715819898, 1715819898, '1276d3c1', -8, 0, 0)

Line : 187
File : sessions.php