Update to transformers 4.28

[ntoxeg]

transformers have LLaMA officially implemented since version 4.28.
This will raise some warning about incongruent types but it should be fine for actual use.

[kuleshov]

thank you! i'll test this out myself soon, but just want to check if you did

[ntoxeg]

Yes, although just in case make sure to test the CLI, as I only used the programmatic interface (except for downloading).
You will get some warnings that class names don’t match (because it’s different capitalization), but otherwise it worked fine.