Update app.py

app.py

@@ -21,7 +21,7 @@ def main():
         img_href = "data:image/png;base64," + img_data.hex()
         st.write(f'<img src="{img_href}">', unsafe_allow_html=True)
         card_svg = draw_card(card_width, card_height, img_href)
-        svg_content = '<?xml version="1.0" encoding="utf-8" ?>' + card_svg.decode("utf-8")
+        svg_content = '<?xml version="1.0" encoding="utf-8" ?>' + card_svg
         st.download_button("Download Card as SVG", svg_content, "card.svg", "text/plain")
     else:
         st.warning("Please upload a card background image")