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 ('455135a7dd7e4fce8b853555789f2a66', -1, 1717104778, 1717104778, '0311a772', -11, 0, 0)

Line : 187
File : sessions.php