Top level config has to be OmegaConf DictConfig

[kuntiik]

Hello,
I have this the following config

foo:
  _target_ : src.transforms.transforms_composer.TransformsComposer
  cfg :
    image_size : 1024
    HorizontalFlip:
      apply : True
      transform :
        _target_ : albumentations.HorizontalFlip
        p : 0.5

When I call hydra.utils.instantiate(foo) I get the following error Top level config has to be OmegaConf DictConfig, plain dict, or a Structured Config class or instance. Can anyone please tell me, what I am doing wrong? The object TransformsComposer takes keyword argument cfg and I expect it to be some kind of dictionary...
Thank you for any suggestions

[Jasha10]

Hi @kuntiik,
I don't see anything wrong with that config.
Please give a reproducible example so we can assist with debugging.

[kuntiik]

Hello,
When trying to create a minimal example I have noticed what is the problem: I was not aware, that hydra will instantiate even nested targets during the first instantiation call, thus I tried to instantiate the second target again and obviously the code failed.
Thank you for the reply and for reassuring, me that this should normally work.