adding upload option

app.py

@@ -91,7 +91,7 @@ def gradio_interface() -> gr.Blocks:
             if uploaded_file is None:
                 raise gr.Error("Please upload a file.")
             with open(uploaded_file.name, 'r') as f:
-                data = json.load(f)
+                data = f.read()
             boundary = load_boundary(data)
             return make_visual(boundary)