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Everytime I want to refresh my DataSet based on SharePoint .xlsx-data following error message appears:
Unfortunately, a problem has occurred.
The refresh token appears to have expired. Go to this dataset's settings page and re-enter the OAuth2 credentials for the SharePointList data source.
The refresh token has expired due to inactivity.
I can't actualise the settings of the so called OAuth2 credentials because it's greyed out.
Its a general problem or is it a problem with my dataset?
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