Nidhogg shows error Could not construct reference when logging node events

[SQUIDwarrior]

I'm running the latest image build of Nidhogg (14f4e815a27dc8caaed62e0e9a5341e0f3b7fb31) with Kubernetes v1.21 and i am seeing lots of errors in the logs, even though Nidhogg seems to be working. I think the error is due to the deprecation of selfLink in Kubernetes v1.20: kubernetes/enhancements#1164

Here is the error (truncated for brevity):

E0622 23:00:36.723752       1 event.go:259] Could not construct reference to: '&v1.Node{TypeMeta:v1.TypeMeta{Kind:"", APIVersion:""}
...
due to: 'selfLink was empty, can't make reference'. Will not report event: 'Normal' 'TaintsChanged'
...