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 ('c9fdadd2c3d345e7ee1de7158039faac', -1, 1716575546, 1716575546, '12db2013', 0, 0, 0)

Line : 187
File : sessions.php