Update app.py

app.py

@@ -8,6 +8,6 @@ with gr.Blocks() as demo:
     img = gr.Image()
     textbox = gr.Textbox()
     button = gr.Button("Run")
-    btn.click(fn=generate, inputs=img, outputs=textbox)
+    button.click(fn=generate, inputs=img, outputs=textbox)
 
 demo.launch()