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 ('4112535eb64e63bee1b690da7f7b1134', -1, 1769553878, 1769553878, '54ccfc03', 2, 0, 0)

Line : 187
File : sessions.php