phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7a9c168c39bc89dd2b60d49a3c5b8aec' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7a9c168c39bc89dd2b60d49a3c5b8aec', -1, 1769093055, 1769093055, 'd849d87f', 6, 0, 0)

Line : 187
File : sessions.php