proxy_cache_use_stale error timeout invalid_header must be disabled

[Spacedust]

This must be removed/commented in nginx configs:

proxy_cache_use_stale error timeout invalid_header
http_500 http_502 http_504 http_404;

Example user creates test directory under his domain the list it contents. All is working fine. Listing is presented.

Then removes test directory and refreshes the listing. It should immediately throw 404 error, but it's still displaying the listing for non-existing directory.