Update app.py

app.py

@@ -259,6 +259,7 @@ async def download_album(album_id: str):
         io.BytesIO(zip_buffer.getvalue()),
         media_type="application/zip",
         headers={
+            "Content-Type": "application/zip",
             "Content-Disposition": f"attachment; filename={album['albumName']}.zip"
         }
     )