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 ('a2f276181e697766affdd1373a4765fd', -1, 1752528309, 1752528309, 'd849d840', 8, 0, 0)

Line : 187
File : sessions.php