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 ('a6715fb8b6dfc62f2da2a2bbf8a7580a', -1, 1560860314, 1560860314, '22eb8fbe', 1, 0, 0)

Line : 189
File : sessions.php