I performed a Pagespeed Insights test on your “Basel Slider” page and I noticed that under “Serve Images in Next-Gen formats” all your images show “Unable to locate resource…”, which helps to reduce your page speed time (see image attached). Could you please tell me what plugin or feature do you use to achieve that?
I use WP Rocket and I get the same message for my fonts (Preload fonts) option but I don’t see anything else for images except CDN.
I’m sorry, I get a different message for my fonts (WP Preload). I’m still wondering how do you get the “Unable to locate resource…”, that somehow helps reducing your Pagespeed.
The error Unable to locate resource says that some resources from your CDN can’t be loaded at all. It is not something related to our theme’s images. You had some issue with your CDN service.
We have just tested your website and don’t see this error.