Update app.py

app.py

@@ -57,7 +57,8 @@ def bot(history):
     return history
 
 def infer(question , history):
-    result = qa({'question': question , 'chat_history': history})
+    hist = history[:-1]
+    result = qa({'question': question , 'chat_history': hist})
     return result
 
 css="""