Unable to view the React app started with 'sudo npm start'

• I need to run my local React app at banker-dev.mh*b.my on port number 443.

• This is to enable the app to call a third party API

• I've set my local .env file with the following:

  HTTPS=true

  HOST=banker-dev.mh*b.my

  PORT=443

• When I run npm start, I encountered the message:

? Admin permissions are required to run a server on a port below 1024. Would you like to run the app on another port instead? (Y/n)

• So I tried sudo npm start but hit error sudo: npm: command not found

• I then sudo installed npm by referring to this: sudo: npm: command not found

• Now I'm able to run sudo npm start

• The app is started as I can see from the code editor.

• But it's not opening a new browser window with the app loading as it usually does with my normal npm start

• And I noticed a weird thing: it's trying to bind to the host dev.mh*b.my instead of banker-dev.mh*b.my

• My hosts file contains the following:

  127.0.0.1 localhost

  127.0.1.1 yogesnsamy-ThinkPad-E490s

  127.0.0.1 banker-dev.mh*b.my

  127.0.0.1 dev.mh*b.my

• I'm doing something wrong, but I'm not sure what. I'm attaching a video reference of what's happening: https://drive.google.com/file/d/1TYcX3wG8yBFjSukvVAkYZDloPJE3JS8T/view?usp=sharing Sorry that part where the app starts to load takes long (0:34 to 1:00). After it does, I try to view the app on the browser but fail.