Update app.py

app.py

@@ -17,7 +17,7 @@ from io import BytesIO
 import pandas as pd
 import matplotlib.pyplot as plt
 from PIL import Image
-from shiny import App, ui, render, reactive, Session
+from shiny import App, ui, render, reactive, Session, module
 from detectron2.utils.visualizer import Visualizer, ColorMode
 from detectron2.data import Metadata