If you aren't running with an EE license, then the project nodes are not available - so that is the expected error message.
The File Nodes are a little different. We provide drop-in replacements for the core file nodes when running in a cloud environment without a persistent filesystem. They write to a file store service that is part of the platform. To enable them, you have to disable the core file nodes in your project template.
If you are running using the local install (rather than docker/k8s) then the file nodes aren't as meaningful - you can use the normal file nodes as they have direct access to your file system.