in the Rasa forum there is some developer who succeeded using CamemBERT
here is the example RASA and camemBERT - #3 by Zoukero - Rasa Open Source - Rasa Community Forum 6
unfortunately while trying their solution I get this error

ImportError: cannot import name ‘modeling_tf_camembert’ from ‘transformers’ (unknown location)

any help/advice will be much appreciated
Thanks