Just set the canonical URL to the given URL without parameters. https://www.wipfelglueck.de/Baumhaus.php

Can you show me the problem please?

You should remove the pages from Google's cache using the Search Console.

In the case of described issue it will be good practice to declare canonical tag. Avoid 301 redirect because it may put unnecessary load on the server and reduce speed. T...

Yes, writing AI-generated content is straightforward for content creators and saves many hours of mental labor. But it also has a lot of problems that the Google crawler...

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