Update pdf loader

app.py

@@ -53,6 +53,7 @@ text_splitter = CharacterTextSplitter()
 
 def process_text_file(file: AskFileResponse):
     import tempfile
+    from langchain_community.document_loaders.pdf import PyPDFLoader
 
     with tempfile.NamedTemporaryFile(mode="w", delete=False, suffix=file.name) as temp_file:
         temp_file_path = temp_file.name
@@ -64,8 +65,8 @@ def process_text_file(file: AskFileResponse):
         text_loader = TextFileLoader(temp_file_path)
         documents = text_loader.load_documents()
     elif file.type == 'application/pdf':
-        pdf_reader = PdfReader(temp_file_path)
-        documents = [page.extract_text() for page in pdf_reader.pages]
+        pdf_loader = PyPDFLoader(temp_file_path)
+        documents = pdf_loader.load()
     else:
         raise ValueError("Provide a .txt or .pdf file")
     texts = text_splitter.split_texts(documents)
@@ -73,6 +74,7 @@ def process_text_file(file: AskFileResponse):
     return texts
 
 
+
 @cl.on_chat_start
 async def on_chat_start():
     files = None