Serve admin had error on "Manage Composer" menu

[soulhd]

I'm using Fat-Free Dev Tools v-0.1.2 and bcosca/fatfree-core v3.8, with composer that I installed with scoop package manager on Windows 11

Whenever I access Manage Composer (http://localhost:8081/manage-composer?composer=self_update) I got these on the Command Return Value panel:

Class 'Nettools\ComposerInterface\Config' not found
---
Trace : #0 C:\Users\mrashdan\scoop\persist\composer\home\vendor\bcosca\fatfree-core\base.php(1984): n0nag0n\Manage_Composer_Controller->indexAction(Object(Base), Array, 'n0nag0n\\Manage_...')
#1 C:\Users\mrashdan\scoop\persist\composer\home\vendor\bcosca\fatfree-core\base.php(1783): Base->call(Array, Array, Array)
#2 C:\Users\mrashdan\scoop\persist\composer\home\vendor\n0nag0n\fatfree-devtools\public\index.php(17): Base->run()
#3 {main}

What does it mean and how to fix it if it was an error?

[n0nag0n]

Sorry wasn't notified of your issue. Did you install this locally or did you install this as part of a project you're working on. I just wonder if you ran composer install if you did it locally or not. The other thing I wonder is if the version was updated and broke part of it?

[n0nag0n]

No response. Closing.