Update app.py

app.py

@@ -149,7 +149,10 @@ def parse(category, chatbot):
 
     
         
-    answer = chatbot[0][1]
+    try:
+        answer = next(chatbot)[1]  
+    except StopIteration:
+        answer = "" 
     
     if category not in Category.__members__:
         # Handle the case when an invalid category is provided