We upgraded to Rancher v1.36.4 and running into an issue where some CRDs were upgraded. I traced the issue down to the `system-upgrade-controller`Helm chart failing. How can I troubleshoot this issue? I'm failing to see an actual error. Also, the `system-upgrade-controller`seems to hang indefinetely.

That's a Kubernetes version, not a Rancher version. What distro are you running? Where are you deploying the SUC from, and what version?

We are running RHEL 9. I'm not sure what you mean by where SUC is deployed from? I thought it was included when we upgraded

rke2-server

? We're on SUC v0.20.1

You seem to be confusing rke2 and rancher?