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 ('8ae9b4c436c9b591505731418d9e1586', -1, 1768941430, 1768941430, 'd849d854', -4, 0, 0)

Line : 187
File : sessions.php