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 ('b30d12af3e3a3d9f30e8e68e4f4e0a76', -1, 1560999962, 1560999962, '36a11ff7', -9, 0, 0)

Line : 189
File : sessions.php