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 ('2db83c1b84960a36c552739cbb7b5fd1', -1, 1737484035, 1737484035, '12dbf2d5', -9, 0, 0)

Line : 187
File : sessions.php