'Not Found' during GetReportsInGroupAsync

NOt Sure If should use a reply, since I am also facing similar issue :

Microsoft.Rest.HttpOperationException: Operation returned an invalid status code 'NotFound'

Stack Error (from Fiddler):

<script src="https://npmcdn.com/[email protected]"></script>
<script src="/scripts/powerbi.js"></script>

    <div id="errorWrapper">
        <h2>
            Error
        </h2>
        <pre>
            Microsoft.Rest.HttpOperationException: Operation returned an invalid status code &#39;NotFound&#39;
   at Microsoft.PowerBI.Api.V2.Reports.&lt;GetReportsInGroupWithHttpMessagesAsync&gt;d__14.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.PowerBI.Api.V2.ReportsExtensions.&lt;GetReportsInGroupAsync&gt;d__37.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 PowerBIEmbedded_AppOwnsData.Controllers.HomeController.&lt;EmbedReport&gt;d__11.MoveNext() in C:\Dev\<**************>\Dev-branch\App Owns Data\PowerBIEmbedded_AppOwnsData\Controllers\HomeController.cs:line 93
        </pre>
    </div>