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 ('0916d36a80ab82ab5b3bc9c64ace5f53', -1, 1762188986, 1762188986, 'd849d824', 7, 0, 0)

Line : 187
File : sessions.php