This is only applicable if you both, enabled federation in chart version >=6.8, and want to keep using lighttpd (no longer required, neither is the default anymore).
IFF you manually enabled ingress.federation.serveWellKnown (which was a hidden setting) before, during upgrade, disable it once before enabling it again.
Upgrading To 6.13 from >=6.8
This is only applicable if you both, enabled federation in chart version >=6.8, and want to keep using lighttpd (no longer required, neither is the default anymore).
IFF you manually enabled
ingress.federation.serveWellKnown(which was a hidden setting) before, during upgrade, disable it once before enabling it again.DPLOY-75