Unable to read /etc/rancher/k3s/k3s.yaml, please start server with --write-kubeconfig-mode or --write-kubeconfig-group to modify kube config permissions

[codeagencybe]

Describe the bug

I started a fresh server on Hetzner and ran the installer command, but at some point I get the error below.

[INFO]  Required dependencies 'kubectl jq mktemp sort printf' are installed.
WARN[0000] Unable to read /etc/rancher/k3s/k3s.yaml, please start server with --write-kubeconfig-mode or --write-kubeconfig-group to modify kube config permissions 
error: error loading config file "/etc/rancher/k3s/k3s.yaml": open /etc/rancher/k3s/k3s.yaml: permission denied
[ERROR] kubectl get nodes failed - check KUBECONFIG setup

To Reproduce
Steps to reproduce the behavior:

1. run curl -sfL https://get.quickstack.dev/setup.sh | sh - on the server
2. See the error

Expected behavior
Complete installation without this error

Screenshots
If applicable, add screenshots to help explain your problem.

[biersoeckli]

Should be resolved by #50