Error combining files in Power query from Azure Datalake despite being excel files

[Anonymous]

I connected my powerbi to our Azure datalake and was able to load the folders into Power Query Editor and choose the excel files I wanted to combine and upload. However, I get an error when I click on 'Combine'.

Error message:

We didn't recognize the format of your first file (). Please filter the list of files so it contains only supported types (Text, CSV, Excel workbooks, etc.) and try again.

The error is straightforward however all the files are in xlsx format so the error makes no sense. Could it be because I loaded it through the azure datalake? When I do the same steps but the files live in Sharepoint, I have no problems so I'm assuming it is an issue with Azure files. Here is a snapshot of step before the error:

Then I get the error as stated above.