Can't load brottli and gzip compressed files of my build in my web server in AWS

[KamilCSPS]

Definitely not an NGINX expert, so bare with me.

Here’s some ressources I found:
Changes to the WebGL loader and templates introduced in Unity 2020.1 page-2#post-6311457

Alternatively,

Configure Nginx to serve .unityweb with gzip header

This page shows how to configure IIS and Apache to serve the .unityweb file with the gzip header: But I use nginx as a server. How do I do it with Nginx? (And without Nginx trying to re-compress the already compressed files.)

Above link is an older thread but if you adapt it to use the MINE types for the more recent Unity version :

Unity - Manual: WebGL: Compressed builds and server configuration

It would probably work.

Good luck!