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 ('a39cc4f60187e0e3165cd9ba2cfc255c', -1, 1560739012, 1560739012, '22cf4e9d', 7, 0, 0)

Line : 189
File : sessions.php