Report Builder error when trying to Select a dataset from the Power BI service

I am trying to connect to a Dataset as a B2B guest in another tenant and am seeing the following error. Please advise how to get this working.

Microsoft.ReportBuilder.Diagnostics.ErrorHandling.ReportBuilderException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.ReportDesigner.DatasetDetailsExtensions.IsMyWorkspace(DatasetDetails datasetDetails)
at Microsoft.ReportDesigner.DatasetBrowsePbiViewModel.<InitializeWorkgroupDatasets>b__23_0(DatasetDetails d)
at System.Linq.Lookup`2.Create[TSource](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
at System.Linq.GroupedEnumerable`3.GetEnumerator()
at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
at Microsoft.ReportDesigner.DatasetBrowsePbiViewModel.<InitializeWorkgroupDatasets>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.ReportDesigner.DatasetBrowsePbiViewModel.<OnSelectedGroupChanged>d__17.MoveNext()
--- End of inner exception stack trace ---