Pagination Not Navigating still

Must be site specific – cause it’s working in the demo and at other sites, too.

i.e. here:
https://www.classic-cadillac.com/1958-cadillac-eldorado-biarritz-58e026024/59721

Try to find error logs in the browser webdeveloper console, error logs at server and report back. Maybe anybody can help.

this is the site

https://www.zennester.be/jeugdtornooi/fotoalbum/

i cant really see anything wrong at first glance