Nexus3-ha installation failed on RKE Kubernetes

I was trying to install the Nexus on the RKE Kubernetes cluster on-prem using Helm …

URL : nxrm-ha 66.0.0 · sonatype/sonatype

But I got the below error —

I hope Nexus is free and open source, so why is it looking for a license file?

do I need to use a different repository?

The Nexus high availability feature requires a pro license.

is there any other Sonatype repository that can be used without a license?