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 ('b2329b48b22b5754f09b1a3dd3e8be85', -1, 1566505310, 1566505310, '12e8ab12', 8, 0, 0)

Line : 189
File : sessions.php