PSR-4 warning when installing CI4 via Composer

Hello! May I know what's this warnings in yellow about PSR-4 when I tried to install CI4 via Composer?

https://i.sstatic.net/oTfR7CoA.png
Can someone help me how to fix this? Thanks!

URL for me blocked.
See https://github.com/codeigniter4/CodeIgni...ssues/8951
It?

Simple CI 4 project for beginners codeigniter-expenses ( topic )

URL for me blocked.
See https://github.com/codeigniter4/CodeIgni...ssues/8951
It?

Yes we have the same problem, can you let me know what's the reason?

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URL for me blocked.
See https://github.com/codeigniter4/CodeIgni...ssues/8951
It?

I tried to downgrade the composer version to 2.7.6 and the PSR-4 notices/warnings disappear, maybe this is a composer bug?

The warnings appear in Composer 2.7.7.
The warnings are correct, so we cannot say it is a bug in Composer.

But there is nothing wrong. They just say skipped to add the classes to the class map.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

The warnings appear in Composer 2.7.7.
The warnings are correct, so we cannot say it is a bug in Composer.

But there is nothing wrong. They just say skipped to add the classes to the class map.

Thanks @kenjis, so this warning is ignorable? Sorry I thought it's a bug in Composer, CI4 is running fine although it has this warnings.

> so this warning is ignorable?

Yes.
Nothing has been changed except Composer shows the messages.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper