Update app_dialogue.py

app_dialogue.py

@@ -221,7 +221,7 @@ def format_user_prompt_with_im_history_and_system_conditioning(
         if turn_is_pure_media(turn):
             media = turn[0][0]
             resulting_messages[-1]["content"].append({"type": "image"})
-            resulting_images.append(Image.open(media))
+            resulting_images.append(load_image_from_url(media))
         else:
             user_utterance, assistant_utterance = turn
             resulting_messages[-1]["content"].append(