error with using categories list

[heinzeric]

Hello folks, I have a serious problem with one Joomla site that causes among others that the use of categories view with Phocadownload goes wrong. The list disappears and the buttom part comes up. There are also errors in other components with the same result, in general the use of a link that leads to details goes wrong. Even the Joomla "read more" feature keeps unseen with the rest of text. As well as the details of events from JEvents and the use of links with the mailadress of a subscriber on the subscriber managment page with Acymailing. I get no support neither from my provider nor from Joomla Official Support Forum. But maybe some who read this have ever heart about such a problem and have an idea how to solve the bug. I count on you!
Not to forget: the problem appears suddenly a week ago or so, but before this it did work.
Many thanks for your support
heinzeric
site with bugs: https://joomla4.kremper-liedertafel.de/index.php
site with nearly a same configuration and the same update status without this bugs: https://sanktpeter-krempe-ev.de/index.php

Joomla 4.4.3
DB mysql 5.7.41
PHP 8.2.6
Template Joomlaplates Tp_classic 1.3.17
PhocaDownload v. 5.0.1

[Jan]

Hi, which lists exactly (the menu link) on the first site disappears? If you don't get any data, try to enable php error reporting and debug mode to see if you don't get some problems in e.g. database.

Jan