Update app.py

app.py

@@ -50,7 +50,7 @@ demo = gr.Interface(
     description=description,
     article=article,
     enable_queue=True,
-    examples=[["example.png"], ["example_2.png"], ["example_3.png"]],
+    examples=[["example.png"], ["example_1.png"],["example_2.png"], ["example_3.png"],["example_4.png"]],
     cache_examples=False)
 
 demo.launch()