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 ('6172645ac65b7a92235de344a1bef160', -1, 1758140393, 1758140393, 'd849d828', 1, 0, 0)

Line : 187
File : sessions.php