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 ('78db7a297d8b325039fa989b91304aec', -1, 1590294375, 1590294375, '03e7dce1', -4, 0, 0)

Line : 172
File : sessions.php