phpBB : Erro Crítico

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO f_activesessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('77c2a1621785a6e4476df644e645d9f2', -1, 1711707904, 1711707904, '3658b30c', 1, 0, 0)

Line : 187
File : sessions.php