Update app.py

app.py

@@ -166,6 +166,6 @@ with gr.Blocks() as demo:
             with gr.Column():
                 image_output = gr.Image()
 
-        upscale_btn.click(image_upscale, inputs=[image_input, int(scale_by)], outputs=image_output)
+        upscale_btn.click(image_upscale, inputs=[image_input, scale_by], outputs=image_output)
 
 demo.launch(show_api=False)