phpBB : Erreur Critique

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7770bb2f8f773c57cb3d616d6b99b5a2' 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 ('7770bb2f8f773c57cb3d616d6b99b5a2', -1, 1768969374, 1768969374, 'd849d87f', -9, 0, 0)

Line : 187
File : sessions.php