oops, something went wrong - Unable to load dataset.

[S_727]

I've created a Power BI report that uses an analysis services data source. I have been able to save it to a location on our Power BI Report Server. When I try run the Power BI Desktop report I get the following error message

oops, something went wrong-

Unable to load dataset. 

I'm using the following version of Power BI Desktop 

Timestamp:
2017-07-25T07:47:09.4414570Z

Local Time:
2017-07-25T17:47:09.4414570+10:00

Product Version:
2.47.4766.1221 (PBIDesktop) (x64)

Release:
June 2017

IE Version:
11.483.15063.0

OS Version:
Microsoft Windows NT 10.0.15063.0 (x64 en-US)

CLR Version:
4.6.2. or later [Release Number = 460798]

Is there something else I need to do to get this report working? 

[jtarquino]

Please double check you have updated the credentials in the datasource section for the report and that you use the test connection button in order to ensure the connectivity is working.

If you still have problems check the logs in C:\Program Files\Microsoft Power BI Report Server\PBIRS\LogFiles\RSPowerBI_**.log

[S_727]

I can confirm that I can test the connection string successfully. Will review the Logs when I get a chance.