Unable load a local French DPR model (etalab-ia/dpr-question_encoder-fr_qa-camembert) #1046
Description
Describe the bug
I tried to save the french DPR model (retriever.save), that's working but i have an error after when i try to load it (retriever.load).
The exact same code work fine with the facebook/dpr-question_encoder-single-nq-base model.
I want to do that to fine-tune the french DPR model.
retriever = DensePassageRetriever(document_store=InMemoryDocumentStore(),
query_embedding_model="etalab-ia/dpr-question_encoder-fr_qa-camembert",
passage_embedding_model="etalab-ia/dpr-ctx_encoder-fr_qa-camembert",
max_seq_len_query=64,
max_seq_len_passage=256,
batch_size=50,
use_gpu=True,
embed_title=False,
use_fast_tokenizers=True,
infer_tokenizer_classes=True,
)
retriever.save("saved_models/test")
retriever = DensePassageRetriever.load("saved_models/test", document_store=None)
ERROR:
TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType