Update app.py

app.py

@@ -53,12 +53,12 @@ def infer(question, history):
     results = []
     for human, ai in history[:-1]:
         pair = (human, ai)
-        res.append(pair)
+        results.append(pair)
     
     chat_history = results
     print(chat_history)
     query = question
-    result = qa({"question": query, "chat_history": chat_history})
+    result = pdf_qa({"question": query, "chat_history": chat_history})
     print(result)
     return result["answer"]