'miniserve --index index.html' gives 404 when index.html is not present in a directory.

[KSXGitHub]

Steps to reproduce

mkdir -p public/sub
echo 'Hello There' > public/sub/index.html
cd public # public does not contain an index.html
miniserve -i 8080 --index index.html .

Open the browser, go to http://localhost:8080/ and http://localhost:8080/sub/.

Expected behavior

• http://localhost:8080/ should display a directory list.
• http://localhost:8080/sub/ should display content of public/sub/index.html.

Actual behavior

• http://localhosy:8080/ is not found (404).