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Hi', in my `Pulumi.env.yaml` I have declared:
```config:
  tools:data:
    vpn:
      vm:
        name: servername
        size: Standard_D4s_v2
    registry:
      config:
        name: registryname```
then from my `___main___.py`
```cfg = pulumi.Config().require_object('data')
vm = cfg.get('vpn').get('vm')
registry = cfg.get('registry').get('config')```
later on when I use such var
```vm = azure_native.compute.VirtualMachine(
  "vpn-VirtualMachine",
  hardware_profile=azure_native.compute.HardwareProfileArgs(
   vm_size=config.vm.get('size'),
  ),
# ...```
everything works, but when I use
```registry = azure_native.containerregistry.Registry(
  "container-Registry",
  admin_user_enabled=True,
  location=config.region,
  registry_name=config.registry.get('name'),```
even if it sees to be the same logic, I'm getting this error:
```      File "/&lt;MY_PATH&gt;/venv/lib/python3.8/site-packages/pulumi/runtime/stack.py", line 181, in massage
        if not key.startswith("_"):
    TypeError: startswith first arg must be bytes or a tuple of bytes, not str
    error: an unhandled error occurred: Program exited with non-zero exit code: 1```
any idea of what I'm doing wrong?