Staff is new to containers. We are attempting Air Gap RKE2 install as requested for proof of concept. Tar and extraction was successful and install appears to have gone off successful. However, rke2-server.service will not start. Journal reporting level=fatal msg="yaml:line4: could not find expected ':', failed to start Rancher Kubernetes Engine v2. Any lessons learned appreciated.

Looks like you may have an error in your config.yaml, /etc/rancher/rke2/config.yaml