Search results not displayed / Elasticsearch

[klartextmedia]

Hi.

I have a fresh Magento 2.4.4 installation with elasticsearch7. Elasticsearch is accessable and builds up the cache. Magento look up the number of results on the  categories filter, but it doesn't display any result. IT only shows Search results for: $searchterm... and a blank page.

I allready tried to flush cache and reindex the database, or using another prefix or trying it with luma theme. nothing helps. Any Ideas what I can do?

[klartextmedia]

same thing on advanced search. It says 22 articles as result, but doesn't display any of them

[klartextmedia]

i found out that the modul PayPal_Braintree or PayPal_BraintreeGraphQl is blocking the search results, but i don't now why yet

[klartextmedia]

Link with error:

https://neu.kaffee-intakt.de/catalogsearch/result/?q=saeco