phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('134d069d78e1022e13897bb310fecdf3', -1, 1717104721, 1717104721, '12bf5ef9', -8, 0, 0)

Line : 187
File : sessions.php