Help for Aimeos

Clean cache, cookies and other data of browser. This not help. Opened my project in else browser.
I still see symshop\ext\ai-client-html\client\html\templates\basket\mini\body-default.php

Can i rewrite this template?

Copied "./ext/ai-client-html/client/html/templates/basket/mini/body-default.php" to "./ext/aitest/client/html/templates/basket/mini/body-default.php" (extension generated by https://aimeos.org/developer/extensions/), added "TEST" in the template before "<section class=" and it worked out of the box (new session without cookies).

Can you post your Aimeos configuration you've added to the config*.yml files?
Please also post the output of "composer show".