vendor/autoload.php not execute with multiple applications?

anyone can help to resolve COMPOSER_PATH with multiple application?
vendor/autoload.php cant load,
I have edit COMPOSER_PATH (...\site1\app\Config\Constants.php) but still not work ...

test repo: https://github.com/totoprayogo1916/ci4-multi

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closed issue but not resolve https://github.com/codeigniter4/CodeIgni...ssues/4887