Update app.py

app.py

@@ -4,6 +4,8 @@ import ast
 import torch
 from PIL import Image, ImageDraw
 import gradio as gr
+import base64
+from io import BytesIO
 
 from transformers import Qwen2_5_VLForConditionalGeneration, AutoProcessor
 from qwen_vl_utils import process_vision_info  # include this file in your repo if not pip-installable