This is a temporary fix to fix the current error.

In a longer term, the nginx configuration should evolve in a try_files block and use a separate location for caching.

Not easy because Dojo has a lot of extensions.

For example, we would like to do something like:

location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|webp|avif|woff|woff2|ttf|eot)$ {
    expires 30d;
    access_log off;
    log_not_found off;
}

But Dojo has files css|gif|gz|html|ico|jpg|js|json|mov|png|svg|ttf|txt|xml|xsd|xsl + legacy stuff like swf/fla/htc
As those files are loaded by JS code, not straightforward either to get a comprehensive list.