Direcrt Query + Local Excel

Hi Guys,

I'm following this post:

https://www.fourmoo.com/2021/01/20/how-to-create-directquery-composite-using-an-existing-power-bi-dataset-and-a-local-excel-file/

After importing the DataSet I press here:

And get the following error:

The remote server returned an error: (400) Bad Request. RootActivityId: b4ec63ea-2fb3-4dca-8e32-xxxxxxxxx

Its strange because some months ago I remeber that conecting a dataset + excel localy was available. 

Do you have any idea?