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 ('4f7c276bc4ff9f0503aa4340ea1f3cb8', -1, 1762215960, 1762215960, 'd849d892', 7, 0, 0)

Line : 187
File : sessions.php