phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a4b4975b443236a5ddc6c348098d4e7e' 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 ('a4b4975b443236a5ddc6c348098d4e7e', -1, 1769667817, 1769667817, 'd849d883', -9, 0, 0)

Line : 187
File : sessions.php