kblubis
Hi
Kindly remove this block on htaccess then try again. Remember to clean cloudflare cache before turning it back on.
## These directives are only enabled if the Apache mod_headers module is enabled.
## This section will check if a .gz file exists and if so will stream it
## directly or fallback to gzip any asset on the fly
## If your site starts to look strange after enabling this, and you see
## ERR_CONTENT_DECODING_FAILED in your browser console network tab,
## then your server is already gzipping css and js files and you don't need this
## block enabled in your .htaccess
<IfModule mod_headers.c>
# Serve gzip compressed CSS files if they exist
# and the client accepts gzip.
RewriteCond "%{HTTP:Accept-encoding}" "gzip"
RewriteCond "%{REQUEST_FILENAME}\.gz" -s
RewriteRule "^(.*)\.css" "$1\.css\.gz" [QSA]
# Serve gzip compressed JS files if they exist
# and the client accepts gzip.
RewriteCond "%{HTTP:Accept-encoding}" "gzip"
RewriteCond "%{REQUEST_FILENAME}\.gz" -s
RewriteRule "^(.*)\.js" "$1\.js\.gz" [QSA]
# Serve correct content types, and prevent mod_deflate double gzip.
RewriteRule "\.css\.gz$" "-" [T=text/css,E=no-gzip:1]
RewriteRule "\.js\.gz$" "-" [T=text/javascript,E=no-gzip:1]
<FilesMatch "(\.js\.gz|\.css\.gz)$">
# Serve correct encoding type.
Header append Content-Encoding gzip
# Force proxies to cache gzipped &
# non-gzipped css/js files separately.
Header append Vary Accept-Encoding
</FilesMatch>
</IfModule>
More info about your issue https://github.com/joomla/joomla-cms/issues/32892
