If you're seeing this DataCall has failed to load its application files

1. This could be caused by your reverse proxy settings.

2. If you host DataCall under subpath make sure your datacall.ini root_url setting includes subpath. If not using a reverse proxy make sure to set serve_from_sub_path to true.

3. If you have a local dev build make sure you build frontend using: yarn start, or yarn build

4. Sometimes restarting dataacall-server can help

5. Check if you are using a non-supported browser. For more information, refer to the list of supported browsers.