Update app.py

app.py

@@ -21,5 +21,5 @@ model.eval()
 task_name = "SGSInvoice"
 task_prompt = f"<s_{task_name}>"
 
-demo = gr.Interface(fn=demo_process,inputs=gr.File(file_types=["*.pdf"]),outputs="json", title=f"Donut 🍩 demonstration for `{task_name}` task",)
+demo = gr.Interface(fn=demo_process,inputs=gr.File(file_count='single', file_types=['.pdf']),outputs="json", title=f"Donut 🍩 demonstration for `{task_name}` task",)
 demo.launch()