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 ('6c082730c6877b22e779c52ba9f7b6e2', -1, 1561003438, 1561003438, '36a11ff7', 36, 0, 0)

Line : 189
File : sessions.php