phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a5a0f3f2234f739c8eb151c44547e119' 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 ('a5a0f3f2234f739c8eb151c44547e119', -1, 1770368704, 1770368704, 'd849d87a', 5, 0, 0)

Line : 187
File : sessions.php