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 ('86acf801446fa059e6307cb50d833a37', -1, 1711710703, 1711710703, '36d255cd', 1, 0, 0)

Line : 187
File : sessions.php