Currently, the diffuser variants of the models need to be available in the huggingface cache. There is a little (albeit lacking) documentation here: https://docs.griptapenodes.com/en/stable/how_to/installs/hugging_face/
The tl;dr is:
- Install the huggingface-cli
- Log in to the huggingface-cli (required because its a gated model)
- Download the model for the Flux ICEdit (aka diptych...):