Update app.py

app.py

@@ -440,7 +440,7 @@ def invoke (prompt, file, history, rag_option, model_option, openai_api_key, k=3
         image = Image.open(io.BytesIO(result)) 
         print("image:.................")
         print(image)
-        history[-1][1] =  {"image": image}  #file.name, 
+        history[-1][1] =  {"image": image},  #file.name, 
         print("history zeichnen......................")
         print(history)
         if shared_state.interrupted: