Update app.py

app.py

@@ -57,7 +57,7 @@ def upload_pdf(file, pdf_text, embeddings, vectorstore, azure_embeddings, qa, pr
         embeddings=embeddings,
         metadatas=[{"source": "source"} for text in texts])
     # qa = RetrievalQA.from_chain_type(llm= ChatOpenAI(model_name='gpt-3.5-turbo' ), chain_type="stuff", retriever=vectorstore.as_retriever())
-    qa = RetrievalQA.from_chain_type(llm= AzureChatOpenAI(deployment_name="chat", model_name="gpt-35-turbo"), chain_type="stuff", vectorstore=vectorstore)
+    qa = RetrievalQA.from_chain_type(llm= AzureChatOpenAI(deployment_name="chat", model_name="gpt-35-turbo"), chain_type="stuff", vectorstore=vectorstore.as_retriever())
 
     return pdf_text, pdf_text, embeddings, vectorstore, azure_embeddings, qa, gr.update(visible=True), gr.update(visible=True), gr.update(visible=False)