phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '38ba191f9de9e6564a2610dba1cfb401' 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 ('38ba191f9de9e6564a2610dba1cfb401', -1, 1770888879, 1770888879, 'd849d87a', -2, 0, 0)

Line : 187
File : sessions.php