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 ('2c3f9b8cd6767083ad6a489da57b7da2', -1, 1767213863, 1767213863, 'd849d817', 8, 0, 0)

Line : 187
File : sessions.php