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 ('a708d78902d3c0dc5962008d0c7c1588', -1, 1560830259, 1560830259, '22e57e1d', 34, 0, 0)

Line : 189
File : sessions.php