phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('994dd7628526b09e4c58e0cc9f1f7de2', -1, 1582409145, 1582409145, '03d6e0e0', -9, 0, 0)

Line : 172
File : sessions.php