Elgg's .htaccess - Allow a directory to be visible via browser

I was trying to setup letsencrypt on my server but I am not able to verify my domain because elgg's .htaccess file is forbidding me to access a folder within the elgg directory and generating a 403 forbidden error.

Letsencrypt is asking to create ".well-known/acme-challenge/" folder and put a file inside that folder. When I am accessing that file via my browser it's showing me 403 forbidden error.

Is there any way to allow/open only the ".well-known/acme-challenge/" folder so that the folders/files in that directory is visible via my browser.