Question why static files end up in apache2 log?

[epertinez]

Hi,
My server is not fast enough so I am trying to find ways to improve it.
One thing I don't get is that even when I have nginx set to act as proxy for static files, some of them get into apache2 log.
Can anybody tell me how is it possible?
Example:
access_ssl_log

<someIP> - - [28/Aug/2023:07:20:40 +0100] "GET <someURL>?gclid=<someGCLID> HTTP/1.0" 200 21593 "Enterprise Advertising & Analytics Solutions - Google Marketing Platform" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:40 +0100] "GET <someURL>?gclid=<someGCLID> HTTP/1.0" 200 65783 "Enterprise Advertising & Analytics Solutions - Google Marketing Platform" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /126011-someimage.jpg HTTP/1.0" 200 11068 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /132149-someimage.jpg HTTP/1.0" 200 65933 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /132149-someimage.jpg HTTP/1.0" 200 2641 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /132153-someimage.jpg HTTP/1.0" 200 6817 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /132168-someimage.jpg HTTP/1.0" 200 3597 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /134849-someimage.jpg HTTP/1.0" 200 11838 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /135337-someimage.jpg HTTP/1.0" 200 9181 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /138484-someimage.jpg HTTP/1.0" 200 10117 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /150762-someimage.jpg HTTP/1.0" 200 20013 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /29089-someimage.jpg HTTP/1.0" 200 10930 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /29331-someimage.jpg HTTP/1.0" 200 12272 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"
<someIP> - - [28/Aug/2023:07:20:42 +0100] "GET /82807-someimage.jpg HTTP/1.0" 200 5099 "https://<someURL>?gclid=<someGCLID>" "<someHttpUserAgent>"



while proxy_access_ssl_log is also serving some other static files. jpg included to the same ip (in this case using http/2.0.

In this case, lots of svg are served by nginx, but in other cases those are served with apache2. And using http/2.0. So... I don't know what is going on.