phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c871e78f9d8dad4f670810b5e0e6c403' for key 'PRIMARY'

INSERT INTO phpbb1_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c871e78f9d8dad4f670810b5e0e6c403', -1, 1714297764, 1714297764, '12bfe458', -4, 0, 0)

Line : 187
File : sessions.php