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 ('89f132bf7d094e2f61842fb0767c118f', -1, 1537372358, 1537372358, '36c6670d', 4, 0, 0)

Line : 187
File : sessions.php