Image URLs with Parameters not being served

Hi there,

we already spent quite some effort to get your plugin working with our site, but now we are stuck with two topics.

It seems that (background) images with urls like https://ds.tethis-it.at/wp-content/uploads/2019/09/Twils-Sunday_01.jpg?id=22506 are not being served at all. Not as jpg, not as webp. Just empty.

The nginx redirection rule seems to work though, because when I try to load the image directly, you get the error “It seems you are visiting this file (plugins/webp-express/wod/webp-on-demand.php) directly. We do not allow this.”
Regardless if I have the parameter appended or not.

This may be caused by the parameter, but I cannot easily get rid of that.
Any ideas how to fix or at least troubleshoot this?

We are running Plesk with the usual apache / nginx combo.
All caching plugins are switched off
34 other images on ds.tethis-it.at are delivered properly in webp format.
Nginx rules set according to your knowledge base article

The second issue is, that the background images of the top slider (Slider Revolution) are not served. Again, not as jpg, not as webp, the background just remains white.
I guess this is a known issue, but can we expect a fix?

Alternatively, is there a slider that is known to work with WebP Express?

Thanks,

Christian
tethis IT
Vienna, Austria
tethis-it.at

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