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 ('6c31fdc5b4615f8ca4a1f9acde1f1f29', -1, 1563222946, 1563222946, '22e51864', -4, 0, 0)

Line : 189
File : sessions.php