Update app.py

app.py

@@ -103,6 +103,7 @@ def get_top_chunks(query, chunk_embeddings, text_chunks):
     return top_chunks
 
 def respond(message, history):
+    response = ""
     best_recipes_chunk = get_top_chunks(message, chunk_embeddings, cleaned_chunks)
     print(best_recipes_chunk)