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 ('5bda94f7b3a2ca14e9fcff15e1ffb847', -1, 1768178122, 1768178122, 'd849d802', -4, 0, 0)

Line : 187
File : sessions.php