phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1cf1b9e9a4585c6fc66347a4454d6e84' 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, priv_session_id) VALUES ('1cf1b9e9a4585c6fc66347a4454d6e84', -1, 1685950388, 1685950388, '12cff04d', -7, 0, 0, 'bd4589f75a7258114277e8342c709fe3')

Line : 187
File : sessions.php