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 ('235f54b14643cdb9e5724645e75e1b4d', -1, 1768957063, 1768957063, 'd849d854', 5, 0, 0)

Line : 187
File : sessions.php