phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '778f29fcc71dc1971fb1791d4d9e4228' 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 ('778f29fcc71dc1971fb1791d4d9e4228', -1, 1766038620, 1766038620, 'd849d89f', -4, 0, 0)

Line : 187
File : sessions.php