Bandwidthd web 404

I used to have output on https://gw.lan/bandwidthd/
but it does not work now (5.2.3? don’t reember last time I’ve looked)

bandwidthd runs, puts data into /tmp/bandwidthd and there’s symlink:

lrwxrwxrwx 1 root root 15 Dec 4 2020 /www/bandwidthd → /tmp/bandwidthd

the contents of /etc/lighttpd indicates that is SHOULD work.
Any idea what to look for?