Thank you both. I used the code snippets from the documentation which is why I have used 0.0.0.0 as part of the host variable.
After changing the APP_HOST/HOST value in the .env file (which contains the environment variables), after rebuilding the server using the command NODE_ENV=production npm run build and after restarting the server by executing the command NODE_ENV=production npm run start, the following message displays:
Actions available
One more thing...
Create your first administrator 💻 by going to the administration panel at:
┌─────────────────────────────┐
│ http://127.0.0.1:1337/admin │
└─────────────────────────────┘
This time, when navigating to this url, the browser successfully loads the Strapi Admin page at the link:
http://127.0.0.1:1337/admin/auth/register-admin
Thank you! 