Update app.py

app.py

@@ -110,6 +110,10 @@ client = InferenceClient("Qwen/Qwen2.5-72B-Instruct")
 mom_type = []
 def respond(message, history, mom_type) :
 #    mom_type = []
+
+    if not mom_type:
+        return "Please choose atleast one mom"
+    selected = mom_type[0]
     if mom_type == "Cool Mom" :
         top_results = get_top_chunks(message, cool_chunk_embeddings, cleaned_cool_chunks)
     elif mom_type == "Tutor Mom" :