502 Bad Gateway when using Zerops Subdomain Access

zerops:
  - setup: python0
    # ==== how to build your application ====
    build:
      # what technologies should the build
      # container be based on (can be an array)
      base: [email protected]

      # select which files / folders to deploy
      # after the build succesfully finished
      # (can be an array of files)
      deployFiles: [app.py, templates, static]

    # ==== how to run your application ====
    run:
      # what technology should the runtime
      # container be based on, can be extended
      # in `run.prepareCommands` using
      # `zsc install nodejs@20`
      base: [email protected]

      # *optional* install dependencies that your
      # runtime service requires, this runs on a
      # separate container that prepare the final
      # runtime image, so if files source files
      # are needed here, they can be passed from
      # build using "addToRunPrepare" param
      prepareCommands:
        - pip install requests flask flask_limiter

      # what ports your app listens on
      # and whether it supports http traffic
      ports:
        - port: 3200
          httpSupport: true

      # how to start your application
      start: python3 app.py

zerops:
  - setup: python0
    # ==== how to build your application ====
    build:
      # what technologies should the build
      # container be based on (can be an array)
      base: [email protected]

      # select which files / folders to deploy
      # after the build succesfully finished
      # (can be an array of files)
      deployFiles: [app.py, templates, static]

    # ==== how to run your application ====
    run:
      # what technology should the runtime
      # container be based on, can be extended
      # in `run.prepareCommands` using
      # `zsc install nodejs@20`
      base: [email protected]

      # *optional* install dependencies that your
      # runtime service requires, this runs on a
      # separate container that prepare the final
      # runtime image, so if files source files
      # are needed here, they can be passed from
      # build using "addToRunPrepare" param
      prepareCommands:
        - pip install requests flask flask_limiter

      # what ports your app listens on
      # and whether it supports http traffic
      ports:
        - port: 3200
          httpSupport: true

      # how to start your application
      start: python3 app.py

if __name__ == '__main__':
    app.run(host="0.0.0.0", port=8000, debug=True)

if __name__ == '__main__':
    app.run(host="0.0.0.0", port=8000, debug=True)

FLASK_RUN_HOST="0.0.0.0"

FLASK_RUN_HOST="0.0.0.0"