Superset - create dataset - could not load columns

[MatMor]

Describe the bug
I have installed a new superset with sqlalchemy-kusto==2.0.1. I use kusto sql. I can connect to the Azure Data Explorer. When I want to create a dataset, I got an error: "An Error Occurred Unable to load columns for the selected table. Please select a different table."
I tried this with different tables. Allways the same.
All Databases and all tables of the database were correct listed in the screen. So the connection seems to work.

To Reproduce
Steps to reproduce the behavior:

1. In settings create a database connection. Use "kustosql+https://xxx.westeurope.kusto.windows.net/..."
2. In Datasets create a new Dataset
3. Select database and table.
4. An error is displayed: "An Error Occurred Unable to load columns for the selected table. Please select a different table."

Expected behavior
The metadata should be loaded, so that the dataset can be stored.