I apologize but the translation doesn't come across in a meaningful interpretation.

Are you using your own database or the one from the class?
Would you please post a picture of your query in the design mode so we can try and help you out?

I use my own made database, but in version 365. The text (translated) is "You can't group fields selected with *.

What is the SQL behind your query?

SELECT CustomerT.State, Sum(CustomerT.CreditLimit) AS SomVanCreditLimit, Avg(CustomerT.CreditLimit) AS GemVanCreditLimit1, Max(CustomerT.CreditLimit) AS MaxVanCreditLimit, Min(CustomerT.CreditLimit) AS MinVanCreditLimit, *
FROM CustomerT
GROUP BY CustomerT.State
ORDER BY Sum(CustomerT.CreditLimit) DESC , Avg(CustomerT.CreditLimit) DESC , Max(CustomerT.CreditLimit) DESC , Min(CustomerT.CreditLimit) DESC;

The error message says:
' You can't group fields selected with *'

Your SQL SELECT ends with a ', *'

I deleted the * and the , at the end of the select row. That solved the problem.  Thanks very much for your help!