Update app.py

app.py

@@ -44,7 +44,7 @@ def pdf_changes(pdf_doc):
     return "Ready"
 
 def query(history, text):
-    result = qa({'question': text, 'chat_history': history})
+    result = qa({'question':question, 'chat_history': history})
     history.append((text, result['answer']))
     
     return history,""