Update app.py

app.py

@@ -6,6 +6,7 @@ from langchain_community.output_parsers.rail_parser import GuardrailsOutputParse
 from langchain_community.document_loaders import PyPDFLoader
 from langchain_google_genai import ChatGoogleGenerativeAI
 import google.generativeai as genai
+from langchain.chains.question_answering import load_qa_chain  # Import load_qa_chain
 
 
 async def initialize(file_path, question):
@@ -42,3 +43,4 @@ async def pdf_qa(file, question):
 
 # Create Gradio Interface
 gr.Interface(fn=pdf_qa, inputs=[input_file, input_question], outputs=output_text, title="PDF Question Answering System", description="Upload a PDF file and ask questions about the content.").launch()
+