jbang template does not handle bad template file

[maxandersen]

jbang init -t jbang test
[jbang] [ERROR] Cannot invoke "dev.jbang.resources.ResourceRef.getOriginalResource()" because the return value of "dev.jbang.source.RefTarget.getSource()" is null
[jbang] Run with --verbose or -x for more details. The --verbose or -x must be placed before the jbang command. I.e. jbang --verbose run [...]

happens if file-refs have a file that does not exist, i.e.

"templates": {
    "jbang": {
      "file-refs": {
        "{basename}/{basename}App.java.qute": "templates/jbang/HelloToolkitApp.java",
        "{basename}/.gitignore": "templates/jbang/.gitignore",
        "{basename}/README.md": "templates/jbang/README.md"
      },
      "properties": {}
    }
  }

where HelloToolkitApp.java is missing.