Help for Aimeos

Hey guys, I get an error when I search for single items in the frontend shop (no matter what item). Is there any known problem? Our version is 2020.10.9 Error log: Time: 4350.8059978485ms Class: Aimeos\MShop\Index\Manager\MySQL SELECT "key", COUNT("id") AS "count" FROM ...

Is it possible to show more orderitems in the customer profile.
Currently only 10 orders are displayed.
And with $this->get( 'listsOrderItems', [] ) you only get 10 entries.