installed magento 2 formatting problem admin oage

[ralfbollei060b]

I have installed magento2 2.4.7. it is running on my dedicated server. OS: debian 12 nginx php 8.3.12 mariadb 10.11.6

currently I managed to log in to mag.mydomain.de/adminxxx

The login screen looks normal. but once I log in, it looks like it is missing formatting of the displayed page:

[ralfbollei060b]

I have found a soulution in another forum online:

alias mage="php -d memory_limit=-1 -f bin/magento"

chmod -R 775 pub/static/ var/ pub/media/ &&
rm -rf var/view_preprocessed/ var/cache/ var/page_cache/ var/tmp/ var/generation/ pub/static/frontend/ ;
mage setup:upgrade &&
mage setup:db-data:upgrade &&
mage dev:source-theme:deploy &&
mage cache:flush &&
mage setup:static-content:deploy;
chmod -R 775 pub/static/ pub/media/ var/

found here

It worked for me!

[ralfbollei060b]

but here is the next problem:

I entered the first product, which worked find.

Once I switch to the shop frontend and select a category I get this message:

1 exception(s):
Exception #0 (BadMethodCallException): Missing required argument $clientClass of Magento\AdvancedSearch\Model\Client\ClientFactory.