When I click “Running” on my app, it opens a new browser tab which displays the following:
2021-12-23 13:26:28.846 INFO    matplotlib.font_manager: generated new fontManager

  You can now view your Streamlit app in your browser.

  Network URL: http://172.17.0.223:8501
  External URL: http://52.87.223.166:8501

However, when I copy and paste either of those URLs into a new browser tab, I get the following error:
Unable to connect

Firefox can’t establish a connection to the server at 172.17.0.223:8501.

    The site could be temporarily unavailable or too busy. Try again in a few moments.
    If you are unable to load any pages, check your computer’s network connection.
    If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

Could this be due to a setting in my Firefox browser, or due to a system/network/security setting on my Mac perhaps? For reference I am on a 13" Macbook Air 2018, and using Firefox version 95.0.2 (64-bit) and this is in regards to the following app on my Spaces page: Fantasy Football Stats (Under Construction) - a Hugging Face Space by jmansfield89
Appreciate any help!
-JM