phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('95ece9587eae76d36e9de6f03b97e4ee', -1, 1776432638, 1776432638, '54ccfc03', 2, 0, 0)

Line : 187
File : sessions.php