Document from dict

app.py

@@ -1,6 +1,7 @@
 import streamlit as st
 from haystack.document_stores import InMemoryDocumentStore
 from haystack.nodes import FARMReader, PreProcessor, PDFToTextConverter, TfidfRetriever
+from haystack.schema import Document
 import logging
 
 document_store = InMemoryDocumentStore()
@@ -18,7 +19,7 @@ preprocessor = PreProcessor(
 def pdf_to_document_store(pdf_files):
     document_store.delete_documents()
     converter = PDFToTextConverter(remove_numeric_tables=True, valid_languages=["en"])
-    documents = [converter.convert(file_path=pdf.name, meta=None) for pdf in pdf_files]
+    documents = [Document.from_dict(converter.convert(file_path=pdf.name, meta=None) for pdf in pdf_files)]
     preprocessed_docs = preprocessor.process(documents)
     document_store.write_documents(preprocessed_docs)
     return None