Error between versions

I was able to run composer require 'drupal/points:^2.0' command without any error (attached screenshot).

also, composer require 'drupal/points:^2.1' - your command is incorrect because we don't have 2.1.x version.

"also, composer require 'drupal/points:^2.1' - your command is incorrect because we don't have 2.1.x version."
I meant the 2.0.1 version

I still get this error,what could be the reason?
-Should I have installed the inline entity form before I use the composer install command?
-I use Postgresql as database,not sure if it has any relation.

Thoughts?

You should have installed IEF:^3.0 module.
2.0.0 branch doesn't have composer.json file to automatically install it.

Ah okay, thanks!
Maybe it needs to be written on the module's page so that people avoid it.
Cheers