Update app.py

app.py

@@ -5,7 +5,7 @@ TOTAL = 0
 with gr.Blocks() as demo:
     gr.Markdown("Nice 3D View")
     t = gr.Timer(value=2.0)
-    m = gr.Model3D(value='duck.glb', label='3D', height=500, interactive=False, clear_color=[0.0, 0.0, 0.0, 0.0])
+    m = gr.Model3D(value='Duck.glb', label='3D', height=500, interactive=False, clear_color=[0.0, 0.0, 0.0, 0.0])
 
     @t.tick(inputs=[t], outputs=[m])
     def update_geometry(x):