phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7d5c454c1cead358e21a9f8a0d6442e0' 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 ('7d5c454c1cead358e21a9f8a0d6442e0', -1, 1768989870, 1768989870, '126109aa', -4, 0, 0)

Line : 187
File : sessions.php