Update app.py

app.py

@@ -33,7 +33,7 @@ article = "<p style='text-align: center'><a href='https://www.docvqa.org/dataset
 examples =[['publaynet_example.jpeg']]
 css = ".output-image, .input-image, .image-preview {height: 600px !important}"
 
-iface = gr.Interface(fn=analyze_image, 
+demo = gr.Interface(fn=analyze_image, 
                      inputs=[gr.inputs.Image(type="numpy", label="document image"),"text"], 
                      outputs="json",
                      title=title,
@@ -41,4 +41,4 @@ iface = gr.Interface(fn=analyze_image,
                      article=article,
                      css=css,
                      enable_queue=True)
-iface.launch(debug=True)
+demo.launch(debug=True)